Ed, Edd and Eddy love to play on a seesaw. It consists of a 1-kg board with a length of 8 meters. One day, the other end broke down. They had to cut it by a meter and maintain the pin support in its original position. Then, they tried the seesaw altogether. Ed (m = 55kg) sat on one side about 3m from the pin while Edd (m = 40kg) and Eddy (m = 40kg) on the other side. If Edd was about 3m as well from the pin, calculate the following:   The manitude of the reaction force (N) exerted by the pin support on the board. Assume Eddy is in between Ed and Edd. (mass of board = 1kg)

Ed, Edd and Eddy love to play on a seesaw. It consists of a 1-kg board with a length of 8 meters. One day, the other end broke down. They had to cut it by a meter and maintain the pin support in its original position. Then, they tried the seesaw altogether. Ed (m = 55kg) sat on one side about 3m from the pin while Edd (m = 40kg) and Eddy (m = 40kg) on the other side. If Edd was about 3m as well from the pin, calculate the following:   The manitude of the reaction force (N) exerted by the pin support on the board. Assume Eddy is in between Ed and Edd. (mass of board = 125g/m)

20. As shown in Figure A P8.20, a green bead of mass 25 g slides along a straight wire. The length of the wire from point @ to point ® is 0.600 m, and point A is 0.200 m higher than point . A constant friction force (B Figure P8.20 of magnitude 0.025 0 N acts on the bead. (a) If the bead is released from rest at point @, what is its speed at point ®? (b) A red bead of mass 25 g slides along a curved wire, subject to a friction force with the same constant magnitude as that on the green bead. If the green and red beads are released simultaneously from rest at point @, which bead reaches point 8 with a higher speed? Explain.

A person standing at the top of a 7.0 m tall building throws a basketball (m = 0.625 kg) with initial speed v = 4.5 m/s. Ignore air resistance. Take y = 0 at ground level (the bottom of the building). What is the total mechanical energy of the ball immediately after the person throws it (Eg)? 49.2 J 42.9J 44.3 J 6.33 J

Ed, Edd and Eddy love to play on a seesaw. It consists of a 1-kg board with a length of 8 meters. One day, the other end broke down. They had to cut it by a meter and maintain the pin support in its original position. Then, they tried the seesaw altogether. Ed (m = 55kg) sat on one side about 3m from the pin while Edd (m = 40kg) and Eddy (m = 40kg) on the other side. If Edd was about 3m as well from the pin, calculate the following: • The manitude of the reaction force (N) exerted by the pin support on the board. Assume Eddy is in between Ed and Edd. (mass of board = 125g/m)

Ima Bratt is at the park with her father. The 25.0 kg Ima is on a swing following the path as shown below. Ima has a speed of 0 m/s at position A and is a height of 3.0 m above the ground. At position B, Ima is 1.0 m above the ground. At position C (2.0 m above the ground), Ima projects from the seat and travels as a projectile along the path shown. At point F, Ima is a negligible distance above the ground. Assume negligible resistance throughout the motion. How much work must Ima's father do to get her up to point A?

Jack and Jill ran up the hill at 2.9 m/s. The horizontal component of Jill's velocity vector was 2.5 m/s a. What was the angle of the hill? b.

Galactic Alliance Junior Mission Officer (GAJMO) Bundit Nermalloy is predicting the kinetic energy of a supply spacecraft, which is being moved in one dimension in the tractor beam of the ship named the Jadarian-Ruby, to ensure that the supply spacecraft doesn't damage the spaceport to which it is being delivered. GAJMO Nermalloy has been instructed to deliver the supply spacecraft with a kinetic energy less than 10 10 J (where 1 J = 1 N·m). GAJMO Nermalloy knows that the change in kinetic energy of an object moving in one dimension is equal to the net work performed on it, where net work is the integral of the component of net force in the direction of motion with respect to the position of the of the object. That is: KE2 – KE1 = x²² F(x) dx. Րա2 The net force exerted by the tractor beam is supposed to be constant, F = −3.5 × 106 N, but due to improper maintenance of the Jadarian-Ruby, the actual force exerted by the tractor beam as a function of position x is given by F(x) = αx³ + ß,…

A 95 kg quarterback accelerates a 0.42 kg ball from rest to 24 m/s in 0.083 s. What is the specific power for this toss?

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