3. A ballistic pendulum is used to measure the speed of a bullet. It consist of a block of wood (mass=2.50 kg) suspended by a wire of negligible mass. A bullet (mass=D0.0100 kg) is fired with a speed Vb1 into the block. Just after the bullet collides with it, the block (with the bullet) has a spee V2 and then swings to a maximum height of 0.650 m above the initial position. Find the speed of the bullet. (Hint: Use LCM.)

A 12.0-g bullet is fired horizontally into a 114-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 143 N/m. The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 82.0 cm, what was the speed of the bullet at impact with the block? m/s

Two metal spheres are suspended by vertical cords as shown below. Sphere 1, m = 25g, is pulled to a height hị = 8.0cm and then released from rest. After swinging down, it undergoes an elastic collision with sphere 2, m2 = 80g. What is the velocity of sphere 1 right after the collision? To what height will sphere 2 rise?

A 33.7-g rifle bullet traveling 205. m/s buries itself in a 2.97-kg pendulum hanging on a 2.67-m-long string, which makes the pendulum swing upward in an arc. Determine how high (in m) the pendulum swings above its original position.

. What is the initial kinetic energy in joules of the bullet in problem 1? What is the final kinetic energy of the combined bullet/pendulum?

A mass m1 = 10.5 kg, with initial velocity V0 = 12.5 m/s, strikes a mass-spring system m2 = 7.25 kg, initially at rest but able to recoil. Assume the spring is massless and the surface horizontal and frictionless. See the figure below. If the collision is completely elastic, what are the final speeds V1 and V2 of m1 and m2, respectively?

A bullet, with mass 0.008 kg is fired into a block of wood with mass 1.96 kg suspended like a pendulum. The bullet makes a completely inelastic collision with the block, becoming embedded in it. After the impact of the bullet, the block swings up to a maximum height 0.079 m. Find the initial speed of the bullet? a) DVB V₂ Δε C M ب 6) /// hJ دو ► M+m

1. An inventor patents a "golf machine". It consists of a "golf club" which is really a pendulum of length L = 2 (m), with a massles string and a mass M = 30 (kg) on the end. By pulling back on the pendulum until the string makes an angle 0= 10° from the vertical, and then releasing it from rest, the golf club strikes the "golf ball" exactly horizontally. The golf ball is a mass m = 0.1 (kg) that rests on a platform which is h = 20 (cm) above the horizontal ground. Assume that all collisions are elastic and all masses are point masses. Finally you should ignore air resistance but gravity acts down as usual. L %3D M) m h How far does m travel horizontally (before it hits the ground)? |How long does it take from the time M is released from rest to the time it strikes m? [Hint: think pendulum]

A small wooden block with mass 0.775 kg is suspended from the lower end of a light cord that is 1.74 m long. The block is initially at rest. A bullet with mass 0.0128 kg is fired at the block with a horizontal velocity vo. The bullet strikes the block and becomes embedded in it. After the collision the combined object swings on the end of the cord. When the block has risen a vertical height of 0.700 m, the tension in the cord is 4.90 N. Part A What was the initial speed vo of the bullet? Express your answer with the appropriate units. v0 = 216 μÅ m S Submit Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining