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A man weighs 750 N on the surface of the earth. What would be his weight when standing on the moon? The masses of the earth and the moon are respectively, 5 98 0 kg and 7 36 0 kg. Their radii are respectively 6 37 0 km and 1 74 0 km

What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h? Take G=6 67 10−11Nm2 kg2, Mass of the earth is 5 98 1024kg

A ball of mass 50 g tied to the end of a 50 cm inextensible string is whirled around in a vertical circle. Find the tension in the string when the ball is at the top of the circle. Take g=10m s2

An upward force of 1 2 104N acts on an elevator of mass 2 0 103kg. Calculate the acceleration of the elevator. Take g=9 8ms−2

The resultant of vectors A and B has a magnitude of 20 units.A has a magnitude of 8 units, and the angle between A and B is 40o. Calculate the magnitude of B

A monkey in a perch 20 m high in a tree drops a coconut above the head of a zoo keeper as he runs with a speed 1.5 m/s beneath the tree actually intending to hit the toes of the zoo keeper, how early in seconds should the coconut be dropped by the monkey

Given that a = 5i +2j - k and b = I - 3j + k. Find (a + b) x (a + b).

Find the scalar product a.b. If a = 2i + 3j + 4k and b = 5i - 2j + k

if the mean of 5,6,z,15,is 16,find the value of z

2x-3y=6 , -3x+5y=0 find solution set by cross multiplication

A 2000 kg satellite orbits the earth at a height of 300 km. What is the speed of the satellite and its period? Take G 67 0 Nm kg , Mass of the earth is 5 98 0 kg

A ball of mass 50g tied to the end of a 50cm inextensible string is whirled around in a vertical circle. find the tension in the string when the ball is at the top of the circle. Take g = 10m/s^2

14 Given that the mass and radius of Jupiter are respectively 1 90 1027kg and 7 15 104km, calculate the escape velocity from the surface of the planet

An upward force of 1 2 104N acts on an elevator of mass 2 0 103kg. Calculate the acceleration of the elevator. Take g=9 8ms−2 3 8m s2 downward 4 7m s2 upward 3 8m s2 upward 4 7m s2 downward