In figure a force of magnitude `F` acts on the free end of the card. If the weight is move up alowly by a distance b. How much work is done on the weight by the rope connecting pulley and weight?

A stone tied to one end of string is moved in a circle. How much work is done by the centripetal force in this circular motion ?

A weight of 5N is moved up a frictionless inclined plane from R to Q as shown. What is the work done in joules?

A force of magnitude 25 N directed at an angle of 37^(@) above the horizontal moves a 10-kg crate along a horiaontal surface at constant velocity . How much work is done by this force in moving the crate a distance of 15 m ?

Figure shows a weight of 30kg suspended at one end of cord and a weight of 70kg applied at other end of the cord passing over a pulley. Neglecting weight of rope and pulley find the tension in the cord and acceleration of the system (g=10ms^(-2))

When you are climbing stairs, work done by the weight is positive. (T or F).