A 10,000 kg crane with a 5m wheelbase and a center of gravity, C.G., 2m from...
A 10,000 kg crane with a 5m wheelbase and a center of gravity,
C.G., 2m from the front
wheels (a=2m) is used to pick up loads that are 5 m in front of the
crane (L=5m). What is the maximum
load that the crane can pick up before it tips over, WL?
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A 10,000 kg crane with a 5m wheelbase and a center of gravity,
C.G., 2m from...
2. [1pt] A crane of mass M has a wheelbase, E, and its centre of mass...
2. [1pt] A crane of mass M has a wheelbase, E, and its centre of mass midway between the wheels (the mass of the boom is negligible). The boom has length L and makes an angle 0 with the horizontal. The crane is in contact with the ground only at its front and rear tires. The diagram shows the crane, supporting a mass m in front. We will be considering two aspects: (a) the force of the rear wheels on...
The crane truck has a weight of 11750 lb and a center of gravity at point...
The crane truck has a weight of 11750 lb and a center of gravity at point CG. The parking brake only locks the rear wheels of the truck, so the front wheels are free to rotate. Determine the maximum force F applied at the angle = 32.5° that can be exerted on the crane without it slipping or tipping for each of the following cases: Case 1: The static friction coefficient between the rear tires and the ground is pe...
5.3 The portable engine hoist shown in the figure weighs 275 lb. This weight acts as...
5.3 The portable engine hoist shown in the figure weighs 275 lb. This weight acts as if concentrated at the machine's center of gravity (c.g.). A chain at E is used to support the 640-lb load. (a) Find the support forces provided at wheels A and F. (b) How far can boom member CDE be extended from its present position before the hoist tips over? - -- 26 -22- LOC D E 640 lb 3769 16280 18— Prob. 5.3
You plan on using a 5000-kg-crane to vertically lift a very heavy mass (m), as shown...
You plan on using a 5000-kg-crane to vertically lift a very
heavy mass (m), as shown in the figure. Assume the horizontal
location of the crane’s center of mass is halfway between the front
and rear bumper of the crane. (a) What is the largest mass that can
safely be lifted without the crane tipping over? (b) If the maximum
mass is lifted vertically, what is the maximum height it can be
lifted without tipping the crane over?
Xcom for,...
Question 4 Londa climbs a tree trunk as shown in gravity is 2 m from the...
Question 4 Londa climbs a tree trunk as shown in gravity is 2 m from the larger end, which rests on the ground. There's no friction between the trunk and the vertical wall while the coefficient of static friction between the trunk and the ground is 0.. Calculate the maximum safe distance along the trunk from the ground at which Londa can climb before the trunk begins to slip. Can he walk up to the end of the trunk? Neglect...
You plan on using a 5000-kg-crane to vertically lift a very heavy mass (m), as shown...
You plan on using a
5000-kg-crane to vertically lift a very heavy mass (m), as shown in
the figure. Assume the horizontal location of the crane’s center of
mass is halfway between the front and rear bumper of the crane. (a)
What is the largest mass that can safely be lifted without the
crane tipping over? (b) If the maximum mass is lifted vertically,
what is the maximum height it can be lifted without tipping the
crane over? (Use 4...
The crane is used to pick up loads from C. The crane is mountd over a...
The crane is used to pick up loads from C. The crane is mountd
over a base separated by 9m (in A). The arm of the crane has a
weight of 4kN (located in D), and the rest of the structure adds to
a weight of 13kN (located in E). In B, there is a counterweight of
31kN. The lad can move to the extreme of C. Determine the max load
so that the crane does not flip, or collapse....
2*. A person wants to push a lamp (mass 8.0 kg) across the floor. The coefficient of friction be tween the lamp and the...
2*. A person wants to push a lamp (mass 8.0 kg) across the floor. The coefficient of friction be tween the lamp and the floor is k = 0.15. Cal- culate the maximum height x above the floor at which the person can push the lamp so that the lamp slides at constant speed rather than tips. The base of the lamp is a circle of radius 0.12 m. The lamp's center of gravity is directly above the center of...
A 60 kg gymnast leaves the floor to perform a somersault, with a reactive force of 2760 N. The center of gravity is 22 cm perpendicular from the line of action of the force. As she first leaves the fl...
A 60 kg gymnast leaves the floor to perform a somersault, with a reactive force of 2760 N. The center of gravity is 22 cm perpendicular from the line of action of the force. As she first leaves the floor, she can be modelled as a long cylinder with moment of inertia md^2/12 (where d is her length, 1.60 m). The time it takes her to leave the floor is 55 ms. As she leaves the floor calculate: 1. Torque...
Consider the roller coaster pictured. The coaster car (m= 1000 kg) starts from rest at (1)...
Consider the roller coaster pictured. The coaster car (m= 1000 kg) starts from rest at (1) the top of the first hill at height H = 40 m. It then (2) drops, (3) goes over the second hill assume semicircular) of height L, and (4) around the loop of radius R, all frictionless. After finishing the loop (5), it encounteres frictional resistance u = 1 on the track at and (6) hits an armadillo (mA = 5 kg) at distance...
2. [1pt] A crane of mass M has a wheelbase, E, and its centre of mass midway between the wheels (the mass of the boom is negligible). The boom has length L and makes an angle 0 with the horizontal. The crane is in contact with the ground only at its front and rear tires. The diagram shows the crane, supporting a mass m in front. We will be considering two aspects: (a) the force of the rear wheels on...
The crane truck has a weight of 11750 lb and a center of gravity at point CG. The parking brake only locks the rear wheels of the truck, so the front wheels are free to rotate. Determine the maximum force F applied at the angle = 32.5° that can be exerted on the crane without it slipping or tipping for each of the following cases: Case 1: The static friction coefficient between the rear tires and the ground is pe...
5.3 The portable engine hoist shown in the figure weighs 275 lb. This weight acts as if concentrated at the machine's center of gravity (c.g.). A chain at E is used to support the 640-lb load. (a) Find the support forces provided at wheels A and F. (b) How far can boom member CDE be extended from its present position before the hoist tips over? - -- 26 -22- LOC D E 640 lb 3769 16280 18— Prob. 5.3
You plan on using a 5000-kg-crane to vertically lift a very
heavy mass (m), as shown in the figure. Assume the horizontal
location of the crane’s center of mass is halfway between the front
and rear bumper of the crane. (a) What is the largest mass that can
safely be lifted without the crane tipping over? (b) If the maximum
mass is lifted vertically, what is the maximum height it can be
lifted without tipping the crane over?
Xcom for,...
Question 4 Londa climbs a tree trunk as shown in gravity is 2 m from the larger end, which rests on the ground. There's no friction between the trunk and the vertical wall while the coefficient of static friction between the trunk and the ground is 0.. Calculate the maximum safe distance along the trunk from the ground at which Londa can climb before the trunk begins to slip. Can he walk up to the end of the trunk? Neglect...
You plan on using a
5000-kg-crane to vertically lift a very heavy mass (m), as shown in
the figure. Assume the horizontal location of the crane’s center of
mass is halfway between the front and rear bumper of the crane. (a)
What is the largest mass that can safely be lifted without the
crane tipping over? (b) If the maximum mass is lifted vertically,
what is the maximum height it can be lifted without tipping the
crane over? (Use 4...
The crane is used to pick up loads from C. The crane is mountd
over a base separated by 9m (in A). The arm of the crane has a
weight of 4kN (located in D), and the rest of the structure adds to
a weight of 13kN (located in E). In B, there is a counterweight of
31kN. The lad can move to the extreme of C. Determine the max load
so that the crane does not flip, or collapse....
2*. A person wants to push a lamp (mass 8.0 kg) across the floor. The coefficient of friction be tween the lamp and the floor is k = 0.15. Cal- culate the maximum height x above the floor at which the person can push the lamp so that the lamp slides at constant speed rather than tips. The base of the lamp is a circle of radius 0.12 m. The lamp's center of gravity is directly above the center of...
Consider the roller coaster pictured. The coaster car (m= 1000 kg) starts from rest at (1) the top of the first hill at height H = 40 m. It then (2) drops, (3) goes over the second hill assume semicircular) of height L, and (4) around the loop of radius R, all frictionless. After finishing the loop (5), it encounteres frictional resistance u = 1 on the track at and (6) hits an armadillo (mA = 5 kg) at distance...
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