A block of mass 2kg is sliding with a constant velocity of 8m/s on a friction less horizontal surface. The force exerted on the horizontal
Answer (1)
Student Expert
11th Jul, 2019
Dear Karsang, According to the Newton’s law of inertia (Newton’s First Law of Motion) the body can move with a constant speed only if it is acted upon by the balanced forces.In this question as the body of 2 kg is sliding with a constant velocity the gravitational pull of the earth on it is balanced by the opposing force (friction). So the force balancing the gravitational pull of the earth is equal to its weight = 2 ⨯9.8 N = 19.6 N
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