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Please explain the answer with reason |
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Answer» Answer: 2) Force is PERPENDICULAR to MOMENTUM. Explanation: P= B[sinwt i + coswt J] Force = dP/dt Differentiating, using chain rule. F= B[coswt×w i + -sinwt ×w j] = Bw[coswt i - sinwtj] P.F(dot product of P vector and F vector) |P|×|F|×cos THETA= coswt×sinwt - coswt×sinwt = 0 Therefore, Force and Momentum are perpendicular to each other.(theta=90°). |
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