angular momentum
linear momentum
The area under the force-time graph represents the impulse imparted by the force, which is equal to the change in momentum.
According to the impulse-momentum theorem, the impulse is the product of the average force and the time over which it acts, and it is equal to the change in linear momentum (\( \Delta p \)): \[ \text{Impulse} = F \cdot \Delta t = \Delta p \] So, the area under a force-time graph gives the change in linear momentum, not angular momentum.
Correct Answer: (D) Linear momentum
A ball is projected in still air. With respect to the ball the streamlines appear as shown in the figure. If speed of air passing through the region 1 and 2 are \( v_1 \) and \( v_2 \), respectively and the respective pressures, \( P_1 \) and \( P_2 \), respectively, then
If the voltage across a bulb rated 220V – 60W drops by 1.5% of its rated value, the percentage drop in the rated value of the power is: