Topic - Force And Laws Of Motion

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Science Class 9 > Force And Laws Of Motion

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Anisha Banerjee

Q. A bucket containing water is rotated in a vertical circle at a high speed. What will happen to water when the bucket is upside down ... 8 Like

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3 answers under Force And Laws Of Motion 1 year, 11 months ago

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1 year, 11 months ago

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Anisha Banerjee

Q. A 1.2 kg block and a 1.8 kg block are initially at rest on a frictionless, horizontal surface. When a compressed spring between ... 4 Like

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3 answers under Force And Laws Of Motion 1 year, 11 months ago

A. Sorry, but i cant see any picture. By the way, u can use conservation of energy for solving this problem.. spring constant 0.5 compression^2 = total K.E. of the two blocks link
1 year, 11 months ago

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Anisha Banerjee

Q. A 2000 kg car travels at a constant speed of 12 m/s around a circular curve of radius 30 meters. As the car goes ... 3 Like

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1 answer under Force And Laws Of Motion 1 year, 11 months ago

A. For the car to stay on the track, the centripetal force must be equal to the centrifugal force. Hence, the centripetal force = mv2/r = 20001212/30 = 9600 N(its a pseudo force thats directed... link
1 year, 11 months ago

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Anisha Banerjee

Q. A spring scale reads 2 kg as it pulls a 1 kg mass across a table. What is the magnitude of the force exerted by ... 3 Like

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1 answer under Force And Laws Of Motion 1 year, 11 months ago

A. The force exerted by the spring on the mass is 1 kgf. The spring scale reading shows the tension in the spring, now a tension of 2 kgf, moves a body of 1kg, without acceleration, hence, 1 kgf is... link
1 year, 11 months ago

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Anisha Banerjee

Q. A force of 20 N acts upon a body whose weight is 9.8 N on the earth. What is the acceleration produced in the ... 3 Like

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1 answer under Force And Laws Of Motion 1 year, 11 months ago

A. Weight of the body(W) = 9.8 N Acceleration due to gravity on Earth(g) = 9.8 m/s2 Hence, mass of the body(m) = 1 kg (W= mg or, m = W/g) Force exerted on body(F) = 20 N We know, F= ma ... link
1 year, 11 months ago

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