Determine the force F required to keep the lever stationary as shown in the figure below. The mass of the object is 30 kg. Assume the gravitational acceleration to be 9.8 m/s2. Provide your answer in N to 4 decimal places.

A hydraulic jack having a ram 250 mm in diameter lifts a weight W = 40 kN under theaction of a 35 mm plunger. What force is réquired on the plunger to lift the weight?

The diagram shows a metre stick suspended from its centre of gravity. A force of 4N acts on the stick at the 20cm mark. A force of FN acts on the stick at the 70 cm mark. The stick is balanced horizontally. Calculate force F.

The area of cross section of press plunger of a hydraulic press is 4 m2. It is required to overcome a resistive load of 400 kgf on it. Calculate the force required on the pump plunger if the area of cross section of the pump plunger is 0.01 m2.A 6 kgf B 1 kgf C 4 kgf D 16 × 104 kgf

An m𝑚 = 1.81-kg ball tied to a string fixed to the ceiling is pulled to one side by a force F at an angle of θ𝜃 = 25.4°. Just before the ball is released and allowed to swing back and forth, how large is the force F that is holding the ball in position?

A mass of 8 kg is traveling at a constant 10.4 m/s when a 38 N force, F, starts to act in the opposite direction, stopping the object after it has traveled. How much work was done by the force, F, in stopping the object?