35 Answered Questions for the topic Gravitation
a planet has mass five times of earth and radius three times that of earth .calculate its acceleration due to gravity ,if value of g on earth is 10m/s^2
GRAVITATION CHAPTER - CLASS 9
Force of gravity? Acceleration?
Mars has a mass of 6.4 × 1023 kg. It has a moon named Phobos with a mass of 1.07 × 1016 kg. a. If their centers are 9400 km apart, what is the force of gravity acting on Phobos?b. If the radius of... more
Period and speed of pendulum?
The period of motion for a pendulum is the amount of time it takes to swing from right to left and back to right again. The period is given by the equation , where T is the period and L is the... more
Speed of launcher?
Dwight uses a spring (k = 40 N/m) on a horizontal surface to make a launcher for model cars. The spring is attached to a holder that has a mass of 0.5 kg. If he compresses the spring and releases... more
Spring Constant? Velocity?
Lincoln goes bungee jumping. He has a mass of 102 kg.a. After his jump, Lincoln hangs from the cord motionless, with the cord stretched by 15 m. What is the spring constant of the bungee cord?b. At... more
Velocity of the canoe?
Blake stands in a canoe in the middle of a lake. The canoe is stationary. Blake holds an anchor with mass 15 kg, then throws it west with a speed of 8 m/s. Blake has a mass of 115 kg and the canoe... more
What kind of collision is this? What formulas do I use for a and b?
Bill forgets to put his car in park, and it starts rolling forward. When it is moving at a speed of 2 m/s, it collides with Tanya's car, which is moving 3 m/s backward. Bill's car bounces backward... more
What force is applied to the car?
At a race track, a car of mass 1150 kg crashes into a concrete wall at a speed of 85 m/s. a. The car crashes into the wall, stopping in 0.1 seconds. What force is applied to the car? (I'm... more
physics gravitation(radius of earth ) help. needed please
If the radius of the earth shrinks by 1.5 % (mass remaining the same ) , then the value of acceleration due to gravity changes by ? 1% 2% 3% 4%