371970 A boy throws a cricket ball from the boundary to the wicket keeper. If the frictional force due to air \(\left(f_{\mathrm{a}}\right)\) cannot be ignored, the forces acting on the ball at the position \(X\) are represented by

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2

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4

371971 The coefficient of friction ' \(\mu\) ' and the angle of friction ' \(\lambda\) ' are related by

371972 When a body is placed on a rough plane \((\) coefficient of friction \(=\mu)\) inclined at an angle \(\theta\) to the horizontal, its acceleration is _ \(\quad(\) acceleration due to gravity \(=\mathbf{g}\) )

371973 Ablock ' \(A\) ' of mass \(100 \mathrm{~kg}\) is kept above another block ' \(B\) ' of mass \(300 \mathrm{~kg}\). ' \(A\) ' is tied to the wall ' \(C\) ' with a horizontal string. The coefficient of friction between ' \(A\) ' and ' \(B\) ' is 0.35 and that between ' \(B\) ' and the horizontal surface is 0.5 Find the horizontal force \(P\). necessary to move block ' \(B\) '.

371970 A boy throws a cricket ball from the boundary to the wicket keeper. If the frictional force due to air \(\left(f_{\mathrm{a}}\right)\) cannot be ignored, the forces acting on the ball at the position \(X\) are represented by

1

2

3

4

371971 The coefficient of friction ' \(\mu\) ' and the angle of friction ' \(\lambda\) ' are related by

371972 When a body is placed on a rough plane \((\) coefficient of friction \(=\mu)\) inclined at an angle \(\theta\) to the horizontal, its acceleration is _ \(\quad(\) acceleration due to gravity \(=\mathbf{g}\) )

371973 Ablock ' \(A\) ' of mass \(100 \mathrm{~kg}\) is kept above another block ' \(B\) ' of mass \(300 \mathrm{~kg}\). ' \(A\) ' is tied to the wall ' \(C\) ' with a horizontal string. The coefficient of friction between ' \(A\) ' and ' \(B\) ' is 0.35 and that between ' \(B\) ' and the horizontal surface is 0.5 Find the horizontal force \(P\). necessary to move block ' \(B\) '.

371970 A boy throws a cricket ball from the boundary to the wicket keeper. If the frictional force due to air \(\left(f_{\mathrm{a}}\right)\) cannot be ignored, the forces acting on the ball at the position \(X\) are represented by

1

2

3

4

371971 The coefficient of friction ' \(\mu\) ' and the angle of friction ' \(\lambda\) ' are related by

371972 When a body is placed on a rough plane \((\) coefficient of friction \(=\mu)\) inclined at an angle \(\theta\) to the horizontal, its acceleration is _ \(\quad(\) acceleration due to gravity \(=\mathbf{g}\) )

371973 Ablock ' \(A\) ' of mass \(100 \mathrm{~kg}\) is kept above another block ' \(B\) ' of mass \(300 \mathrm{~kg}\). ' \(A\) ' is tied to the wall ' \(C\) ' with a horizontal string. The coefficient of friction between ' \(A\) ' and ' \(B\) ' is 0.35 and that between ' \(B\) ' and the horizontal surface is 0.5 Find the horizontal force \(P\). necessary to move block ' \(B\) '.

371970 A boy throws a cricket ball from the boundary to the wicket keeper. If the frictional force due to air \(\left(f_{\mathrm{a}}\right)\) cannot be ignored, the forces acting on the ball at the position \(X\) are represented by

1

2

3

4

371971 The coefficient of friction ' \(\mu\) ' and the angle of friction ' \(\lambda\) ' are related by

371972 When a body is placed on a rough plane \((\) coefficient of friction \(=\mu)\) inclined at an angle \(\theta\) to the horizontal, its acceleration is _ \(\quad(\) acceleration due to gravity \(=\mathbf{g}\) )

371973 Ablock ' \(A\) ' of mass \(100 \mathrm{~kg}\) is kept above another block ' \(B\) ' of mass \(300 \mathrm{~kg}\). ' \(A\) ' is tied to the wall ' \(C\) ' with a horizontal string. The coefficient of friction between ' \(A\) ' and ' \(B\) ' is 0.35 and that between ' \(B\) ' and the horizontal surface is 0.5 Find the horizontal force \(P\). necessary to move block ' \(B\) '.