In order to slide a 753 N box across the floor at a constant speed, you must push horizontally with a force of magnitude 452 N. What is the coefficient of kinetic friction?
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- On Earth at sea level, a rope can sustain a maximum force of 80.7 N before breaking. What is the weight of the heaviest object it can lift vertically while accelerating with a magnitude of 3.07 m/s2 ?A 250.0 N box is placed on a horizontal surface and a force of 150 N is applied at anangle of 30.0o from the horizontal. As a result, the box slides along the surface with anacceleration of 05.00 m/s2What is the coefficient of friction between the box and the surface?How much tension must a rope withstand if it is used to accelerate a 960 kg car horizontally along a frictionless surface at 1.20 m/s2?
- How much tension must a rope withstand if it is used to accelerate a 1210-kg car horizontally along a frictionless surface at 1.20m/s2?You want to move a 400-N crate across a level floor by pulling upward on the rope at an angle of 30o above the horizontal. How hard must you pull to keep it moving with an acceleration of ax = 0.5 m/s2 ? Assume that μk = 0.30.A horizontal force of 200 N drags a 12 kg chest across a level floor where Uk= 0.4, find the resulting acceleration.
- A horizontal force of 92.7 N is applied to a 54.5 kg crate on a rough, level surface. If the crate accelerates at 1.23 m/s2, what is the magnitude of the force of kinetic friction (in N) acting on the crate?On Earth at sea level, a rope can sustain a maximum force of 49.8 N before breaking. What is the weight of the heaviest object it can lift vertically while accelerating with a magnitude of 1.66 m/s2 ? (without breaking)How much tension must a cable withstand if it is used to accelerate a 12 Kg box at 1.2 m/s2? Assume there is no friction.
- The friction force that a horizontal surface exerts on a 59-kg object is 19 N. If the initial speed of the object is20 m/s, what distance will it slide before coming to a stop?An elevator, which weighs 8 tons with its load, is descending with a speed of 900 ft/min. Ifthe load on the cables must not exceed 14 tons, what is the shortest distance in which the elevator can be stopped?A body weighing 2,225 N is being dragged along a rough horizontal plane by a force of P = 445 N. If the coefficient of friction is 1/12 and the line of the pull makes an angle of 18 deg above the horizontal, what are the velocities acquired from rest in the first 3.65m and in the first 5.5m?