1. | \(50\) ms-2 | 2. | \(1.2\) ms-2 |
3. | \(150\) ms-2 | 4. | \(1.5\) ms-2 |
1. | \(10\sqrt3\) | 2. | zero |
3. | \(10\) | 4. | \(20\) |
Calculate the acceleration of the block and trolly system shown in the figure. The coefficient of kinetic friction between the trolly and the surface is \(0.05\).
( \(g=10 \mathrm{~m} / \mathrm{s}^2\), mass of the string is negligible and no other friction exists ).
1. \(
1.25 \mathrm{~m} / \mathrm{s}^2
\)
2. \( 1.50 \mathrm{~m} / \mathrm{s}^2
\)
3. \( 1.66 \mathrm{~m} / \mathrm{s}^2
\)
4. \( 1.00 \mathrm{~m} / \mathrm{s}^2\)
A body of mass m is kept on a rough horizontal surface (coefficient of friction = ). A horizontal force is applied to the body, but it does not move. The resultant of normal reaction and the frictional force acting on the object is given by , where:
1.
2.
3.
4.