Q1. Calculate the value of acceleration due to gravity on the surface of moon.(Given Mass of moon=7.4x1022 kg, radius of moon is 1740 Km, G= 6.67 x 10-11 N m2/kg. Q2. What will be the acceleration due to gravity at a planet whose mass is eight times the mass of the earth and whose radius is twice that of earth? (g on earth = 10 m/s2) Q3. A stone when dropped freely in the river from a bridge takes 2 seconds to touch the water surface in the river. Calculate the height of the bridge from the water level of the river. ( g=9.8 m/s2) Q4. A cricket ball is dropped from a height of 20 metres. a) Calculate the speed of ball when it hits the ground. b) Calculate the time it takes to fall through this height. (g=10 m/s2) Q5. A ball is thrown up with a speed of 15 m/s. How high will it go before it begins to fall? (g=9.8 m/s2) Q6. A particle is thro2n up vertically with a velocity of 50 m/s. What will be its velocity at the highest point of the journey? How high would the particle rise? What time would it take to reach the highest point? (g=10 m/s2) Q7. A stone is dropped from the edge of a roof. a) How long does it take to fall 4.9 m? b) How fast does it move at the end of 4.9 m? c) How fast does it move at the end of 7.9 m? d) What is the acceleration after 1s and 2s? Q8. The weight of the boy on the surface of earth is 294N. Find his mass. (g=9.8 m/s2) Q9. The weight of a man on the surface of earth is 588 N. Find his mass (g=9.8 m/s2). If the man were taken to the moon, his weight would be 98 N. What is his mass on moon? Also determine the acceleration due to gravity on the moon. Q10. Find the ratio of the weight of an object of mass 50 kg on the earth and on moon. ( Given acceleration due to gravity on moon = 1/6 of g on earth)
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Q1. Calculate the value of acceleration due to gravity on the surface of moon.(Given Mass of moon=7.4x1022 kg, radius of moon is 1740 Km, G= 6.67 x 10-11 N m2/kg. Q2. What will be the acceleration due to gravity at a planet whose mass is eight times the mass of the earth and whose radius is twice that of earth? (g on earth = 10 m/s2) Q3. A stone when dropped freely in the river from a bridge takes 2 seconds to touch the water surface in the river. Calculate the height of the bridge from the water level of the river. ( g=9.8 m/s2) Q4. A cricket ball is dropped from a height of 20 metres. a) Calculate the speed of ball when it hits the ground. b) Calculate the time it takes to fall through this height. (g=10 m/s2) Q5. A ball is thrown up with a speed of 15 m/s. How high will it go before it begins to fall? (g=9.8 m/s2) Q6. A particle is thro2n up vertically with a velocity of 50 m/s. What will be its velocity at the highest point of the journey? How high would the particle rise? What time would it take to reach the highest point? (g=10 m/s2) Q7. A stone is dropped from the edge of a roof. a) How long does it take to fall 4.9 m? b) How fast does it move at the end of 4.9 m? c) How fast does it move at the end of 7.9 m? d) What is the acceleration after 1s and 2s? Q8. The weight of the boy on the surface of earth is 294N. Find his mass. (g=9.8 m/s2) Q9. The weight of a man on the surface of earth is 588 N. Find his mass (g=9.8 m/s2). If the man were taken to the moon, his weight would be 98 N. What is his mass on moon? Also determine the acceleration due to gravity on the moon. Q10. Find the ratio of the weight of an object of mass 50 kg on the earth and on moon. ( Given acceleration due to gravity on moon = 1/6 of g on earth)Explanation: