"Work" rArr" "W=98.1J "It is assumed that the potential energy of objects located at" "ground level is zero." "If the object is higher than the ground level, it gains potential energy". "We can calculate the potential energy of objects above ground" "level using the equation given below." E_p=m g h "Where m:mass of object , h:height from ground level" E_p=5*9.81*2 E_p=98.1J "A change in The formula for calculating work is Work = Force x Distance. Hence, to calculate the distance from force and work, proceed as follows: Determine the work done, W, when the force, F, is applied. Divide the work done, W, by the applied force, F. Congrats, you have calculated the distance from the force and work! The force acts for one seconds. (a) Show that the work done by the applied force does not exceed 4 0 J. (b) Find the work done by the force of gravity in that one second if the work done by the applied force is 4 0 J. (c) Find the kinetic energy of the block at the instant the force ceases to act. Take g = 1 0 m / s 2.

1. Find the accelerating and retarding (stopping) force: A cheetah has a mass of 50 kg. It accelerates from rest to 50 km/h in 3 seconds. Then it starts steadily slowing down and stops after 8 seconds. Accelerating force: First, find acceleration: 50 km/h. \small 50 \space \text {km/h} 50 km/h is equal to.

Question. Calculate the work done by an 85.0-kg man who pushes a crate 4.00 m up along a ramp that makes an angle of 20^\circ 20∘ with the horizontal. (See Figure 7.34.) He exerts a force of 500 N on the crate parallel to the ramp and moves at a constant speed. Be certain to include the work he does on the crate and on his body to get up the Calculate the work done in KJ by a crane when it lifts a load of construction materials with a total mass of 1144.8 kg to a height of 12.12 m. A crane lifts 1 tonne of concrete through a height of 25 m. How much work does it do? (1 kg has a weight of 9.81 N.) 3OXn.
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    • find the work done when a 25 kg weight