Questions
A small sphere is suspended by a string of length l. The sphere is making oscillatory motion between extreme positions A and B then
detailed solution
Correct option is D
At the extreme positions A and B, velocity is zero. Tension induced in the string is always perpendicular to the direction of motion. Since power delivered by tension is T→.V→, it is always zero. Power delivered by gravitational force is F→g.V→. At position C, Fg→ and V→ are mutually perpendicular and at the extreme positions V→ is zero. So option (1) is also right. Therefore, (4) is the correct option.Talk to our academic expert!
Similar Questions
A uniform stick of mass M and length L is pivoted at its centre. Its ends are tied to two springs each of force constant K. In the position shown in figure, the strings are in their natural length. When the string is displaced through a small angle and released. The stick:
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