Q- A cart (m1 = 120 kg) is moving to the right along a track at v1i = 15 m/s when it hits a stationary cart (m2 = 360 kg) and rebounds with a speed of v1f = 7 m/s in the opposite direction.
Q1- Suppose a current of I = 1 A flows through a conductor that is tapered. The initial diameter of the conductor is 1 mm with a length of 5 mm. The final diameter of the conductor is 3 mm with a length of 8 mm, the tapered section in between is 10 mm long. (a) What is the current density through al…
Q1- A capacitor is made from two hollow, coaxial iron cylinders, one inside the other. The inner cylinder is negatively charged and the outer is positively charged; the magnitude of the charge on each is 10.0 pC. The inner cylinder has a radius of 0.200 mm , the outer one has a radius of 5.40 mm, an…
A compound gear system driving a large roller is shown below.
(a) Calculate the angular velocities of gears B, C and the product roller for when gear A has an angular velocity of 200 rpm.
(b) When power is applied to the gear A it is required that the design running speed (of 200 rpm at…
Q1- A girl pulls a box of mass m = 6 kg across a floor with a constant horizontal force F = 35 N. Initially the block is at rest. For the first d1 = 7 m, there is no friction between the box and the floor. For the next d2 = 7 m the coefficient of friction between the box and the floor is m = 0.1.
…(a) A space explorer comes across a spherical planet with a small moon in orbit around it. He observes that the moon completes one full orbit every 33 Earth days and moves at a distance R = 390 million m from the center of the planet. What is the mass of the planet? (One earth day =86400 s)
(b) U…
Q1- A car moving at a speed of 35 m/s enters a curve that describes a quarter turn of radius 125 m. The driver gently applies the brakes, giving a constant tangential deceleration of magnitude 1.2 m/s2.
a) Just before emerging from the turn, what is the magnitude of the car's acceleration?
b) …
Projectile Motion
Q 1 - A man standing 29 m from the base of a vertical cliff throws a ball with a speed of 38 m/s aimed directly at a point 6 m above the base of the cliff.
a) How long does it take the ball to reach the cliff?
b) Neglecting air resistance and the height of the man, calculate the…
Question 1 - A massless spring of spring constant 20 N/m is placed between two carts. Cart 1 has a mass M1 = 5 kg and Cart 2 has a mass M2 = 3.5 kg. The carts are pushed toward one another until the spring is compressed a distance 1.4 m. The carts are then released and the spring pushes them apart. …
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