A 20.0 kg box slides 1.60 m down a rooftop with a 30.0° incline and a...
A 20.0 kg box slides 1.60 m down a rooftop with a 30.0° incline and a coefficient of kinetic friction of 0.342. It then falls off the rooftop and hits the ground. Assume no air resistance. The bottom of the rooftop is 2.78 m above ground.
a) What are the components of the weight, using axes parallel and perpendicular to the rooftop?
b) Write the normal force and the force of friction in component form
c) Calculate the acceleration of the block
d) If the box has an initial speed of 0.607 m/s, what is the speed at the bottom of the rooftop?
e) The box slides off the roof and becomes a projectile. Now use horizontal and vertical axes instead of the previous axes. What are the horizontal and vertical components of the velocity the moment the box leaves the roof?
f) Use these components as the box’s new initial velocity. What are the components of the final velocity?
g) How much time does it take for the box to hit the ground?
h) How far next to the house does the box land?
Homework Answers
Add Answer to:
A 20.0 kg box slides 1.60 m down a rooftop with a 30.0° incline
and a...
A 1.0 kg box starts from rest and slides down a very rough inclined plane as...
A 1.0 kg box starts from rest and slides down a very rough inclined plane as shown below. Use energy principles to determine the coefficient of friction on the incline surface if its speed at the bottom is 2.78 m/s. The box sits on a incline that is 0.5m above the ground on a 30 degree incline.
A 2.00-kg-box, starting from rest, slides down a frictionless incline. The incline makes and angle of...
A 2.00-kg-box, starting from rest, slides down a frictionless
incline. The incline makes and angle of ? = 30? from the horizontal
and is fixed to a table. The incline has a maximum height of h =
0.500 m above the table that is itself H = 2.00 m above the ground.
(a) Find the accleration of the box during the sliding period. (b)
What is the velocity of the box as it leaves the table. (c) What
horizontal distance...
A 5kg box slides down an incline of angle 40 with an unknown coefficient of kinetic...
A 5kg box slides down an incline of angle 40 with an unknown coefficient of kinetic friction. If the box’s acceleration is measured to be 3.58 m/s2 down the slope, what is the value of the unknown coefficient of kinetic friction?
3. Starting from rest, a 5.20-kg block slides 1.60 m down a rough 30.0° incline. The...
3. Starting from rest, a 5.20-kg block slides 1.60 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is μk = 0.436. (a) Determine the work done by the force of gravity. J (b) Determine the work done by the friction force between block and incline. J (c) Determine the work done by the normal force. J (d) Qualitatively, how would the answers change if a shorter ramp at a steeper angle...
A block of mass m = 3.00 kg slides down a 30.0∘ incline which is 3.60 m high. At the bottom, it s...
A block of mass m = 3.00 kg slides down a 30.0∘ incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 7.50 kg which is at rest on a horizontal surface (Figure 1). (Assume a smooth transition at the bottom of the incline). The collision is elastic, and friction can be ignored. A) Determine the speed of the block with mass m = 3.00 kg after the collision. B) Determine the speed...
A m = 10.0 kg box slides down a d = 00 m long ramp that...
A m = 10.0 kg box slides down a d = 00 m long ramp that is
raised h = 0 .500 m above the ground (thus the ramp has a θ = 30.0⁰
incline). Assuming the ramp has a coefficient of kinetic friction
of µk = 0.200 and the box is initially at rest, what is
the final speed of the box when it makes it to the bottom of the
ramp? [2.53 m/s]
V = 0 d =...
A 2.00 kg box slides down a rough incline plane from a height h of 1.03...
A 2.00 kg box slides down a rough incline plane from a height h of 1.03 m. The box had a speed of 2.33 m/s at the top and a speed of 1.90 m/s at the bottom. Calculate the mechanical energy lost due to friction (as heat, etc.).
Q3- A 3kg box slides down 1m long incline as in the figure. The box starts...
Q3- A 3kg box slides down 1m long incline as in the figure. The box starts from rest at the top, experiences a constant frictional force of 5N. Use energy method to determine the speed at the bottom of the incline? d1.00 m 0.500 m Q4- The coefficient of kinetic friction between 3kg block and the surface in the figure is 0.4. The system starts from rest. Use energy principle to find the speed of the 5kg ball when it...
1. A 300 kg piano slides 4.7 m down a 30 degree incline and is kept...
1. A 300 kg piano slides 4.7 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parellel to the incline. The effective coefficient of kinetic friction is 0.35. Calculate the force exerted by the man. 2. A box is given a push so it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.25 and the push imparted an initial speed...
A block of mass m = 2.26 kg slides down an α = 32.8 ° incline...
A block of mass m = 2.26 kg slides down an α = 32.8 ° incline
which is h = 3.54 m high. At the bottom, it strikes a block of mass
M = 7.22 kg which is at rest on a horizontal surface, as seen in
figure below. (Assume a smooth transition at the bottom of the
incline.) If the collision is elastic, and friction can be ignored,
determine the speed of the smaller block after the collision.
A 2.00-kg-box, starting from rest, slides down a frictionless
incline. The incline makes and angle of ? = 30? from the horizontal
and is fixed to a table. The incline has a maximum height of h =
0.500 m above the table that is itself H = 2.00 m above the ground.
(a) Find the accleration of the box during the sliding period. (b)
What is the velocity of the box as it leaves the table. (c) What
horizontal distance...
A m = 10.0 kg box slides down a d = 00 m long ramp that is
raised h = 0 .500 m above the ground (thus the ramp has a θ = 30.0⁰
incline). Assuming the ramp has a coefficient of kinetic friction
of µk = 0.200 and the box is initially at rest, what is
the final speed of the box when it makes it to the bottom of the
ramp? [2.53 m/s]
V = 0 d =...
Q3- A 3kg box slides down 1m long incline as in the figure. The box starts from rest at the top, experiences a constant frictional force of 5N. Use energy method to determine the speed at the bottom of the incline? d1.00 m 0.500 m Q4- The coefficient of kinetic friction between 3kg block and the surface in the figure is 0.4. The system starts from rest. Use energy principle to find the speed of the 5kg ball when it...
A block of mass m = 2.26 kg slides down an α = 32.8 ° incline
which is h = 3.54 m high. At the bottom, it strikes a block of mass
M = 7.22 kg which is at rest on a horizontal surface, as seen in
figure below. (Assume a smooth transition at the bottom of the
incline.) If the collision is elastic, and friction can be ignored,
determine the speed of the smaller block after the collision.
Most questions answered within 3 hours.
-
Using the data in the following table, calculate:
A. Average return and standard deviation for each...
asked 1 minute from now -
A health care professional wishes to estimate the birth weights
of infants. How large a sample...
asked 15 minutes ago -
You are the manager for a large department within a company, and
you have received a...
asked 7 minutes ago -
Name and draw the chemical structure of the three aromatic amino
acids. Which groups in an...
asked 15 minutes ago -
The forelimb bones of a cat are ____________ to the forelimb
bones of a bird. The...
asked 18 minutes ago -
What is the standard cell potential of the following
reactions
a. F2 + 2Cl- → 2F-...
asked 20 minutes ago -
1. What is an instruction trace?
2) What common events lead to the creation of a...
asked 23 minutes ago -
What would be the consequences if every organization used
different rules and definitions for how it...
asked 27 minutes ago -
Examine the properties (memory, stability, casuality, linearity,
and time-invariance) for the following systems
(a) y(t) =...
asked 32 minutes ago -
How does MDMA inhibit cytochrome P450 ?
asked 37 minutes ago -
How do you draw a bode plot for:
a.) (2s) / (s+100)
b.) (((2)(s+100)) / (s^2...
asked 43 minutes ago -
Sally is trying to bring in a new client for her gym. The client
is Amy,...
asked 50 minutes ago