268873 A particle of mass \(100 \mathrm{~g}\) is thrown vertically upwards with a speed of \(5 \mathrm{~m} / \mathrm{s}\). The work done by the force of gravity during the time the particle goes up is

268874 A large slab of mass \(5 \mathrm{~kg}\) lies on a smooth horizontal surface, with a block of mass \(4 \mathrm{~kg}\) lying on the top of it. The coefficient of friction between the block and the slab is 0.25 . If the block is pulled horizontally by a force of \(F=6 \mathrm{~N}\), then the work done by the force of friction on the slab, between the instants \(\mathbf{t}=2 \mathbf{s}\) to \(\mathbf{t}=3 \mathbf{s}\) is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

268875 In the pulley - block system shown in figure, strings are light. Pulleys are massless and smooth. System is released from rest. In 0.3 seconds

a) work done on \(2 \mathrm{~kg}\) block by gravity is \(6 \mathrm{~J}\)
b) work done on \(2 \mathrm{~kg}\) block by string is \(-2 \mathrm{~J}\)
c) work done on \(1 \mathrm{~kg}\) block by gravity is \(-1.5 \mathrm{~J}\)
d) work done on \(1 \mathrm{~kg}\) block by string is \(2 \mathrm{~J}\)

268876 A body of mass \(0.5 \mathrm{~kg}\) travels in a straight line with a velocity \({ }_{v=a x^{\frac{3}{2}}}\) where \(a=5 m^{-\frac{1}{2}} s^{-1}\). What is the work done by the net force during its displacement from \(\mathbf{x}=\mathbf{0}\) to \(\mathrm{x}=2 \mathrm{~m}\) ?P.E AND K.E

268873 A particle of mass \(100 \mathrm{~g}\) is thrown vertically upwards with a speed of \(5 \mathrm{~m} / \mathrm{s}\). The work done by the force of gravity during the time the particle goes up is

268874 A large slab of mass \(5 \mathrm{~kg}\) lies on a smooth horizontal surface, with a block of mass \(4 \mathrm{~kg}\) lying on the top of it. The coefficient of friction between the block and the slab is 0.25 . If the block is pulled horizontally by a force of \(F=6 \mathrm{~N}\), then the work done by the force of friction on the slab, between the instants \(\mathbf{t}=2 \mathbf{s}\) to \(\mathbf{t}=3 \mathbf{s}\) is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

268875 In the pulley - block system shown in figure, strings are light. Pulleys are massless and smooth. System is released from rest. In 0.3 seconds

a) work done on \(2 \mathrm{~kg}\) block by gravity is \(6 \mathrm{~J}\)
b) work done on \(2 \mathrm{~kg}\) block by string is \(-2 \mathrm{~J}\)
c) work done on \(1 \mathrm{~kg}\) block by gravity is \(-1.5 \mathrm{~J}\)
d) work done on \(1 \mathrm{~kg}\) block by string is \(2 \mathrm{~J}\)

268876 A body of mass \(0.5 \mathrm{~kg}\) travels in a straight line with a velocity \({ }_{v=a x^{\frac{3}{2}}}\) where \(a=5 m^{-\frac{1}{2}} s^{-1}\). What is the work done by the net force during its displacement from \(\mathbf{x}=\mathbf{0}\) to \(\mathrm{x}=2 \mathrm{~m}\) ?P.E AND K.E

268873 A particle of mass \(100 \mathrm{~g}\) is thrown vertically upwards with a speed of \(5 \mathrm{~m} / \mathrm{s}\). The work done by the force of gravity during the time the particle goes up is

268874 A large slab of mass \(5 \mathrm{~kg}\) lies on a smooth horizontal surface, with a block of mass \(4 \mathrm{~kg}\) lying on the top of it. The coefficient of friction between the block and the slab is 0.25 . If the block is pulled horizontally by a force of \(F=6 \mathrm{~N}\), then the work done by the force of friction on the slab, between the instants \(\mathbf{t}=2 \mathbf{s}\) to \(\mathbf{t}=3 \mathbf{s}\) is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

268875 In the pulley - block system shown in figure, strings are light. Pulleys are massless and smooth. System is released from rest. In 0.3 seconds

a) work done on \(2 \mathrm{~kg}\) block by gravity is \(6 \mathrm{~J}\)
b) work done on \(2 \mathrm{~kg}\) block by string is \(-2 \mathrm{~J}\)
c) work done on \(1 \mathrm{~kg}\) block by gravity is \(-1.5 \mathrm{~J}\)
d) work done on \(1 \mathrm{~kg}\) block by string is \(2 \mathrm{~J}\)

268876 A body of mass \(0.5 \mathrm{~kg}\) travels in a straight line with a velocity \({ }_{v=a x^{\frac{3}{2}}}\) where \(a=5 m^{-\frac{1}{2}} s^{-1}\). What is the work done by the net force during its displacement from \(\mathbf{x}=\mathbf{0}\) to \(\mathrm{x}=2 \mathrm{~m}\) ?P.E AND K.E

268873 A particle of mass \(100 \mathrm{~g}\) is thrown vertically upwards with a speed of \(5 \mathrm{~m} / \mathrm{s}\). The work done by the force of gravity during the time the particle goes up is

268874 A large slab of mass \(5 \mathrm{~kg}\) lies on a smooth horizontal surface, with a block of mass \(4 \mathrm{~kg}\) lying on the top of it. The coefficient of friction between the block and the slab is 0.25 . If the block is pulled horizontally by a force of \(F=6 \mathrm{~N}\), then the work done by the force of friction on the slab, between the instants \(\mathbf{t}=2 \mathbf{s}\) to \(\mathbf{t}=3 \mathbf{s}\) is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

268875 In the pulley - block system shown in figure, strings are light. Pulleys are massless and smooth. System is released from rest. In 0.3 seconds

a) work done on \(2 \mathrm{~kg}\) block by gravity is \(6 \mathrm{~J}\)
b) work done on \(2 \mathrm{~kg}\) block by string is \(-2 \mathrm{~J}\)
c) work done on \(1 \mathrm{~kg}\) block by gravity is \(-1.5 \mathrm{~J}\)
d) work done on \(1 \mathrm{~kg}\) block by string is \(2 \mathrm{~J}\)

268876 A body of mass \(0.5 \mathrm{~kg}\) travels in a straight line with a velocity \({ }_{v=a x^{\frac{3}{2}}}\) where \(a=5 m^{-\frac{1}{2}} s^{-1}\). What is the work done by the net force during its displacement from \(\mathbf{x}=\mathbf{0}\) to \(\mathrm{x}=2 \mathrm{~m}\) ?P.E AND K.E