If a bridge is anchored on two concrete pillars, then the net torque on the bridge will be
Correct answer: A. τ = 0
- A. τ = 0
- B. 0 < τ < 1
- C. τ = 1
- D. 1 < τ < 2
Explanation
The correct answer isτ = 0. For a bridge anchored on two concrete pillars, it is expected to be in static equilibrium, meaning the net torque acting on it should be zero. This ensures that the bridge does not rotate and remains stable. The other options suggest that there is a net torque acting on the bridge, which would result in rotation and instability, which is not the case for a properly anchored and balanced bridge.
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Vector addition combines directed quantities using the head-to-tail, parallelogram and component methods. Work includes finding the resultant magnitude and direction for two or more vectors, resolving vectors into perpendicular components, and distinguishing vector addition from scalar addition, where direction has no role.
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