Homework Answers
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o the object is at the origin and Two constant forces act on an object of...
At the instant the displacement of a 2.00 kg object relative to the origin is d→...
At the instant the displacement of a 2.00 kg object relative to the origin is d→ = (2.00 m) î + (4.00 m) ĵ - (3.00 m) k̂ , its velocity is v→ = - (5.26 m/s) î + (2.99 m/s) ĵ + (2.37 m/s) k̂ and it is subject to a force F→ = (1.20 N) î - (3.42 N) ĵ + (8.57 N) k̂ . Find the acceleration of the object ((a), (b) and (c) for î ,...
A 35.0-9 object connected to a spring with a force constant of 45.0 N/m oscillates with...
A 35.0-9 object connected to a spring with a force constant of 45.0 N/m oscillates with an amplitude of 8.00 cm on a frictionless, horizontal surface. (a) Find the total energy of the system. (h) Find the speed of the object when its position is 1.30 cm. (Let 0 cm be the position of equilibrium.) mi's (c) Find the kinetic energy when its position is 3.00 cm. m (d) Find the potential energy when its position is 3.00 cm. V...
Two forces act on a 3.20 kg object, the gravitational force and a second, constant force....
Two forces act on a 3.20 kg object, the gravitational force and a second, constant force. The object starts from rest and in 1.20 s is displaced (4.251 - 3.301) m. Write the second force in unit vector notation. (Enter your answer in kg. m/s. Assume the gravitational force acts in the - direction.) = (18.888)i + (17.152); First, find the acceleration vector using kinematics, then substitute into Newton's second law to determine the unknown force vector. Recall that the...
PART B A uniform hoop of mass ? = 2 ?? and radius ? = 50...
PART B
A uniform hoop of mass ? = 2 ?? and radius ? = 50 ?? rolls
smoothly with constant angular speed of ? = 1.5 ???/? on a
horizontal surface. Note that the rotational inertia of the hoop
about its central axis is ??^2. Find the kinetic energy of the
hoop.
Q14 (10 points): An object of mass 2.4 kg moves in an xy-plane. At a given instant, ts position and its velocity components are as shown in...
1. Two forces act on an object: i) 50 N at 45˚ north of east and...
1. Two forces act on an object: i) 50 N at 45˚ north of east and ii) 25 N at 30˚ south of east. Which of the following is the resultant and its angle relative to the easterly direction? 2. Find the resultant of two vectors: i) 50 units due east and ii) 100 units 30˚ north of west.
Two forces, of magnitudes F1 = 95.0 N and F2 = 45.0 N , act in...
Two forces, of magnitudes F1 = 95.0 N and F2 = 45.0 N , act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure. (Figure 1) Initially, the center of the block is at position xi = -1.00 cm . At some later time, the block has moved to the right, and its center is at a new position, xf = 6.00 cm . Part A Find the work W1 done on...
Two forces, of magnitudes F1 = 100 N and F2 = 45.0 N , act in...
Two forces, of magnitudes F1 = 100 N and F2 = 45.0 N , act in opposite directions on a block, which sits atop a frictionless surface. Initially, the center of the block is at position xi = -4.00 cm . At some later time, the block has moved to the right, and its center is at a new position, xf = 1.00 cm . Part A Find the work W1 done on the block by the force of magnitude...
15.5 Two forces, of magnitudes F1 = 80.0 N and F2 = 20.0 N , act...
15.5
Two forces, of magnitudes F1 = 80.0 N and F2 = 20.0 N , act in
opposite directions on a block, which sits atop a frictionless
surface, as shown in the figure. (Figure 1)Initially, the center of
the block is at position xi = -1.00 cm . At some later time, the
block has moved to the right, and its center is at a new position,
xf = 1.00 cm
A.
Find the work W1 done on the block...
Two forces of 200 N each are applied to an object, such that they are at...
Two forces of 200 N each are applied to an object, such that they are at 140 degree from each other. what is the magnitude of the third force necessary to keep the object stationary? A satellite in a stable circular orbit around the Earth, travelling at 2.3 Times 10^2 km above the ocean has a period of The planet Venus has a period of 225 days in its orbit around the sun. The mean radius of its orbit is:...
Two forces, of magnitudes F1 = 80.0 N and F2 = 40.0 N , act in...
Two forces, of magnitudes F1 = 80.0 N and F2 = 40.0 N , act in
opposite directions on a block, which sits atop a frictionless
surface, as shown in the figure. (Figure 1)Initially, the center of
the block is at position xi = -4.00 cm . At some later time, the
block has moved to the right, and its center is at a new position,
xf = 5.00 cm .
PART 1)
Find the work W1 done on the...
A 35.0-9 object connected to a spring with a force constant of 45.0 N/m oscillates with an amplitude of 8.00 cm on a frictionless, horizontal surface. (a) Find the total energy of the system. (h) Find the speed of the object when its position is 1.30 cm. (Let 0 cm be the position of equilibrium.) mi's (c) Find the kinetic energy when its position is 3.00 cm. m (d) Find the potential energy when its position is 3.00 cm. V...
Two forces act on a 3.20 kg object, the gravitational force and a second, constant force. The object starts from rest and in 1.20 s is displaced (4.251 - 3.301) m. Write the second force in unit vector notation. (Enter your answer in kg. m/s. Assume the gravitational force acts in the - direction.) = (18.888)i + (17.152); First, find the acceleration vector using kinematics, then substitute into Newton's second law to determine the unknown force vector. Recall that the...
PART B
A uniform hoop of mass ? = 2 ?? and radius ? = 50 ?? rolls
smoothly with constant angular speed of ? = 1.5 ???/? on a
horizontal surface. Note that the rotational inertia of the hoop
about its central axis is ??^2. Find the kinetic energy of the
hoop.
Q14 (10 points): An object of mass 2.4 kg moves in an xy-plane. At a given instant, ts position and its velocity components are as shown in...
15.5
Two forces, of magnitudes F1 = 80.0 N and F2 = 20.0 N , act in
opposite directions on a block, which sits atop a frictionless
surface, as shown in the figure. (Figure 1)Initially, the center of
the block is at position xi = -1.00 cm . At some later time, the
block has moved to the right, and its center is at a new position,
xf = 1.00 cm
A.
Find the work W1 done on the block...
Two forces of 200 N each are applied to an object, such that they are at 140 degree from each other. what is the magnitude of the third force necessary to keep the object stationary? A satellite in a stable circular orbit around the Earth, travelling at 2.3 Times 10^2 km above the ocean has a period of The planet Venus has a period of 225 days in its orbit around the sun. The mean radius of its orbit is:...
Two forces, of magnitudes F1 = 80.0 N and F2 = 40.0 N , act in
opposite directions on a block, which sits atop a frictionless
surface, as shown in the figure. (Figure 1)Initially, the center of
the block is at position xi = -4.00 cm . At some later time, the
block has moved to the right, and its center is at a new position,
xf = 5.00 cm .
PART 1)
Find the work W1 done on the...
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