80 kg adventurer ties a rope of length L to a bridgs and falls off in...
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20) A 80 kg adventurer ties a rope of length 1ta bodgs and fallsoff in s owing e ewn in the figure. The tension (in N) in the rope at the lowest point is a) 2100 b) 2200 c) 2300 d) 2400 e) 2500 21) Block A with mass mA 2 kg traveling at s 10 m/s to the...
A long thin bar (length L = 18 cm, mass 1.8 kg) of uniform
density is placed upon a horizontal, frictionless surface. A small
rubber puck (mass 250 g) slides towards the bar with a speed (2
m/s) directed perpendicular to the bar. It collides perfectly
elastically with the bar at a distance (d) from the center of mass
of the bar in such a way that the puck rebounds with a velocity (1
m/s).
a) What is the value...
A solid ball of the mass 0.500 kg was hung on a rope with the
length 70,0 cm with the other end of the rope nailed to a wall. The
ball was released from its horizontal position like the image
above.
in its trajectory, the ball hit a block with the mass 2,5 kg
what was at rest on a slippery surface with no friction and the
collision is elastic.
find
a) speed of the ball a moment after the...
A bullet of mass 0.017 kg traveling horizontally at a high speed of 210 m/s embeds itself in a block of mass 5 kg that is sitting at rest on a nearly frictionless surface. (a) What is the speed of the block after the bullet embeds itself in the block? Vr = 42 x m/s (b) Calculate the total translational kinetic energy before and after the collision. Ktrans,i = 374.85 Ktrans,f= (c) Compare the two results and explain why there...
A car with mass 1500 kg traveling east at 25 m/s collides at an intersection with a 2500kg van traveling north at a speed of 20 m/s. Find the magnitude and direction of the velocity of the wreckage after the collision, assuming that the vehicles undergo a perfectly inelastic collision and assuming no friction.
A bullet of mass 0.017 kg traveling horizontally at a high speed of 210 m/s embeds itself in a block of mass 4 kg that is sitting at rest on a nearly frictionless surface. (a) What is the speed of the block after the bullet embeds itself in the block? Vf = m/s ) Calculate the total translational kinetic energy before and after the collision. Ktrans,i = Ktrans,f = (c) Compare the two results and explain why there is a...
A bullet of mass 0.056 kg traveling horizontally at a speed of 100 m/s embeds itself in a block of mass 1.5 kg that is sitting at rest on a nearly frictionless surface. (a) What is the speed of the block after the bullet embeds itself in the block? v= m/s (b) Calculate the kinetic energy of the bullet plus the block before the collision: K; = (c) Calculate the kinetic energy of the bullet plus the block after the...
A6.0 kg disk traveling at 9.0 m/s strikes a 7.0 kg stick of length 5.0 m that is lying flat on nearly frictionless ice as shown in the overhead view in the figure below. The disk strikes at the endpoint of the stick, at a distance r = 2.5 m from the stick's center. Suppose that the collision is perfectly inelastic so that the disk adheres to the stick at the endpoint at which it strikes. The moment of inertia...
A block of mass m= 4.4 kg, moving on frictionless surface with a speed = 9.2 m/s, makes a perfectly elastic collision with a block of mass M at rest. After the collision, the 4.4 kg block recoils with a speed of Vi= 2.5 m/s. In Figure 8.2, the mass Mis closest to: A) 7.7 kg B) 12 kg C) 5.6 kg D) 21 kg E) 44 kg Answer: A m before after {P. - EP Vor - Vai Vsi...
A hanging weight, with a mass of me = 0.350 kg, is attached by a rope to a block with mass m2 = 0.820 kg as shown in the figure below. The rope goes over a pulley with a mass of M = 0.350 kg. The pulley can be modeled as a hollow cylinder with an inner radius of R2 = 0.0200 m, and an outer radius of R2 = 0.0300 m; the mass of the spokes is negligible. As...