PULLING / PUSHING A BODY
Laws of Motion

270347 A weight\(W\) rests on a rough horizontal plane. If the angle of friction is \(\theta\), the least force that can move the body along the plane will be

1 \(W \cos \theta\)
2 \(W \tan \theta\)
3 \(W \cot \theta\)
4 \(W \sin \theta\)
Laws of Motion

270348 A ball of mass\(0.5 \mathrm{~kg}\) is attached to the end of a string having length \(0.5 \mathrm{~m}\). The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is \(324 \mathrm{~N}\). The maximum possible value of angular velocity of ball in (rad/s)

1 9
2 18
3 27
4 36
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Laws of Motion

270347 A weight\(W\) rests on a rough horizontal plane. If the angle of friction is \(\theta\), the least force that can move the body along the plane will be

1 \(W \cos \theta\)
2 \(W \tan \theta\)
3 \(W \cot \theta\)
4 \(W \sin \theta\)
Laws of Motion

270348 A ball of mass\(0.5 \mathrm{~kg}\) is attached to the end of a string having length \(0.5 \mathrm{~m}\). The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is \(324 \mathrm{~N}\). The maximum possible value of angular velocity of ball in (rad/s)

1 9
2 18
3 27
4 36