Selina Concise Physics Class 10 ICSE Solutions Work, Energy and Power Selina ICSE Solutions for Class 10 Physics Chapter 2 Work, Energy and Power Exercise 2(A) 1. Define work. When is work said to be done by a force? Solution 1. Work is said to be done only when the force applied on a body makes the body move. It is a scalar quantity. 2.How is the work done by a force measured when (i) force is in direction of displacement, (ii) force is at an angle to the direction of displacement? Solution 2. (i) When force is in direction of displacement , then work done , W = F x S (ii) When force is at an angle θ to the direction of displacement, then work done, W= F S cos θ 3.A force F acts on a body and displaces it by a distance S in a direction at an angle Selina Solutions Icse Class 10 Physics Chapter - Work Energy And Power with the direction of force. (a) Write the expression for the work done by the force. (b) What should be the angle between force and displac...
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