College Physics
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Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of 6.00 m. The tension force in the rope is 58.0 N and the angle is 30° with respect to the horizontal. The frictional force on the box is 12.0 N. How much work is done on the box by the normal force, in Joule? Use g = 10.0 m/s2.
Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
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- A box of 10 kg mass is sliding down a ramp with 60 degree inclination for 5 meters. The kinematic coefficient of friction is 0.3. What is the magnitude of work done by the friction force, in Newtons? Use g = 10 m/s2. Neglect the sign when entering your answer.arrow_forwardA 22kg crate is at rest on a ramp with an incline of 25 degrees. There is a coefficient of kinetic friction between the ramp and crate of 0.29. A force is applied to pull the crate up the incline at a constant speed. What is the work done by this force to pull the crate a distance L=2.45m up the ramp?arrow_forwardA box with with a mass m = 2kg is being pushed up a ramp by an unknown pushing force Fp. The coefficient of static friction between the box and interface is 0.7. The coefficient of kinetic friction between the box and interface is 0.6. The incline of the ramp is 15 degrees. The velocity of the box is constant. The surface of the ramp is 12 m. What is the work done by normal force while the box is being pushed the entire length of the ramp? [ I think that it is 0 N, since the x component of normal force which is parallel to motion is 0. Is that correct?]arrow_forward
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