144052 A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal acceleration when string becomes horizontal will be ( \(\mathrm{g}=\) gravitational acceleration)

144053 A particle moves along a circle of radius ' \(r\) ' with constant tangential acceleration. If the velocity of the particle is ' \(v\) ' at the end of second revolution, after the revolution has started then the tangential acceleration is

144054 A particle of mass ' \(m\) ' is moving in circular path of constant radius ' \(r\) ' such that centripetal acceleration is varying with time ' \(t\) ' as \(K^{2} r t^{2}\) where \(K\) is a constant. The power delivered to the particle by the force acting on it is

144056 An aeroplane executes a horizontal loop at a speed of \(720 \mathrm{~km} / \mathrm{h}\) with its wings banked at \(45^{\circ}\). What is the radius of the loop? Take \(\mathrm{g}=10 \mathrm{~ms}^{-2}\).

144058 A cyclist starts from the centre \(O\) of a circular park of radius one kilometre, reaches the edge \(P\) of the park, then cycles along the circumference and returns to the centre along QO as shown in the figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is :

144052 A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal acceleration when string becomes horizontal will be ( \(\mathrm{g}=\) gravitational acceleration)

144053 A particle moves along a circle of radius ' \(r\) ' with constant tangential acceleration. If the velocity of the particle is ' \(v\) ' at the end of second revolution, after the revolution has started then the tangential acceleration is

144054 A particle of mass ' \(m\) ' is moving in circular path of constant radius ' \(r\) ' such that centripetal acceleration is varying with time ' \(t\) ' as \(K^{2} r t^{2}\) where \(K\) is a constant. The power delivered to the particle by the force acting on it is

144056 An aeroplane executes a horizontal loop at a speed of \(720 \mathrm{~km} / \mathrm{h}\) with its wings banked at \(45^{\circ}\). What is the radius of the loop? Take \(\mathrm{g}=10 \mathrm{~ms}^{-2}\).

144058 A cyclist starts from the centre \(O\) of a circular park of radius one kilometre, reaches the edge \(P\) of the park, then cycles along the circumference and returns to the centre along QO as shown in the figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is :

144052 A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal acceleration when string becomes horizontal will be ( \(\mathrm{g}=\) gravitational acceleration)

144053 A particle moves along a circle of radius ' \(r\) ' with constant tangential acceleration. If the velocity of the particle is ' \(v\) ' at the end of second revolution, after the revolution has started then the tangential acceleration is

144054 A particle of mass ' \(m\) ' is moving in circular path of constant radius ' \(r\) ' such that centripetal acceleration is varying with time ' \(t\) ' as \(K^{2} r t^{2}\) where \(K\) is a constant. The power delivered to the particle by the force acting on it is

144056 An aeroplane executes a horizontal loop at a speed of \(720 \mathrm{~km} / \mathrm{h}\) with its wings banked at \(45^{\circ}\). What is the radius of the loop? Take \(\mathrm{g}=10 \mathrm{~ms}^{-2}\).

144058 A cyclist starts from the centre \(O\) of a circular park of radius one kilometre, reaches the edge \(P\) of the park, then cycles along the circumference and returns to the centre along QO as shown in the figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is :

144052 A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal acceleration when string becomes horizontal will be ( \(\mathrm{g}=\) gravitational acceleration)

144053 A particle moves along a circle of radius ' \(r\) ' with constant tangential acceleration. If the velocity of the particle is ' \(v\) ' at the end of second revolution, after the revolution has started then the tangential acceleration is

144054 A particle of mass ' \(m\) ' is moving in circular path of constant radius ' \(r\) ' such that centripetal acceleration is varying with time ' \(t\) ' as \(K^{2} r t^{2}\) where \(K\) is a constant. The power delivered to the particle by the force acting on it is

144056 An aeroplane executes a horizontal loop at a speed of \(720 \mathrm{~km} / \mathrm{h}\) with its wings banked at \(45^{\circ}\). What is the radius of the loop? Take \(\mathrm{g}=10 \mathrm{~ms}^{-2}\).

144058 A cyclist starts from the centre \(O\) of a circular park of radius one kilometre, reaches the edge \(P\) of the park, then cycles along the circumference and returns to the centre along QO as shown in the figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is :

144052 A mass attached to one end of a string crosses top-most point on a vertical circle with critical speed. Its centripetal acceleration when string becomes horizontal will be ( \(\mathrm{g}=\) gravitational acceleration)

144053 A particle moves along a circle of radius ' \(r\) ' with constant tangential acceleration. If the velocity of the particle is ' \(v\) ' at the end of second revolution, after the revolution has started then the tangential acceleration is

144054 A particle of mass ' \(m\) ' is moving in circular path of constant radius ' \(r\) ' such that centripetal acceleration is varying with time ' \(t\) ' as \(K^{2} r t^{2}\) where \(K\) is a constant. The power delivered to the particle by the force acting on it is

144056 An aeroplane executes a horizontal loop at a speed of \(720 \mathrm{~km} / \mathrm{h}\) with its wings banked at \(45^{\circ}\). What is the radius of the loop? Take \(\mathrm{g}=10 \mathrm{~ms}^{-2}\).

144058 A cyclist starts from the centre \(O\) of a circular park of radius one kilometre, reaches the edge \(P\) of the park, then cycles along the circumference and returns to the centre along QO as shown in the figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is :