a particle performs simple harmonic motion in a straight line about a centre see when the distance from C are 5.0 and 13.0cm, its velocities are 25.0 and 7.0cms-1 respectively. Find its period and amplitude of the oscillations
A person is falling from the top of a building. If they hit the ground they will die. A superhero swoops in from the side at high speed and catches them just before they reach the ground. The person is saved from harm. Why does this defy physics? Give Equations/Laws to justify your answer.
In a barfight, one person swings a punch with their bare hand and knocks another person over a table in spectacular fashion. The person who threw the punch remains stationary, their hand undamaged. Why does this defy physics? Give Equations/Laws to justify your answer
A spaceship travels at an enormous speed to go from one star system to another. As it reaches its destination, its “hyperdrive” deactivates, bringing the ship to an immediate halt in orbit around a planet. Why does this defy physics? Give Equations/ Laws to justify yourself
it is known that the mass of the earth is 81 times the mass of the moon. show that the point of weightlessness between the earth and the moon for a spacecraft house occurs at √9/10 of the distance to the moon
A brass nameplate is 2.00 cm x 10.0 cm x 40.0 cm in size. A force F of 6.00 x 105 N acts on the upper left side and the bottom right side, as shown in the figure. Determine the shear strain x/h which relates to the amount x of horizontal deformation of the top edge and the vertical height h of the nameplate. Determine the angle o of deformation.
A motorcycle travels a certain distance, moving with constant speed of 80 Km/h and in it he spends a time 5 hours. What will be its distance traveled?
FIGURE 3 shows a uniform rod of length 1.80 m and mass 9 kg resting on support at point X. Weight of the object A is 60 N is put on the end of the rod. If the total torque is 80.3 N m, determine the weight of the object B which is 60 cm from point X. to the centre of gravity of the rod.
Aboy throw aball horizontally from the top of a certain building the ball leaves the boy's hand with aspeed of 3m/s and strike the ground with speed of 5m/s find A. the flight time. B.what is the heigt of the building
The force acting on a particle varies as in the figure below. (The x axis is marked in increments of 10.0 m.) Find the work done by the force as the particle moves across the following distances. (a) from x = 0 m to x = 80.0 m (b) from x = 80.0 m to x = 120.0 m (c) from x = 0 m to x = 120.0 m
FIGURE 3 shows a uniform rod of length 1.80 m and mass 9 kg resting on support at point X. Weight of the object A is 60 N is put on the end of the rod. (a) If the total torque is 80.3 N m, determine the weight of the object B which is 60 cm from point X. to the centre of gravity of the rod. determine.
An apple with mass M is hanging at rest from the lower end of a light vertical rope. A dart of mass M/4 is shot vertically upward, strikes the bottom of the apple, and remains embedded in it.
You are bowling for a spare. There is just one pin left, and you make a nice play. As the 5.1 kg ball approches at a velocity of 3.40 m/s north it hits the pin! The 1.5 kg pin is sent into motion and the bowling ball continues to roll at a velocity of 0.87 m/s north. What is the final velocity of the pin?
Calculator O A speaker, rated at 4V, draws a current of 13A. It is left switched on for 3 seconds. How much electrical work is done on a speaker?