2. At the top of a giant swing on the high bar, a 50kg gymnast's velocity...
A 66 kg gymnast is at the top of a swing on the high bar. Her velocity is 2.3 m/s and she is 3.8 m high. What is the gymnast's total mechanical energy of this instant?
W ull unguial velocity of 8 a. (1 point) How much force does the gymnast need to produce with their hands on the bar in order to maintain their grip (i.e. what is the centripetal force required for rotation)? tc-m.ar CR=r wrth - 1145 misrad -92.6 Fc-4.640N . (0.5 points) All else being equal, if the gymnast's center of mass is located 1.5 m from the axis of rotation (instead of 1.45 m), how would that affect the force required...
questions with answers the cylinder's vertical velocity is zero? 10. A gymnast falls from the high bar and lands on a 10 cm thick gymnastics mat. The gymnast strikes the back of his head against the mat during his landing. His head is moving at 7 m/s when it first strikes the mat. The mass of his head is 5 kg. The impact ends when the gymnast's head comes to a stop after deflecting the mat 6.5 cm. How much...
A 54 kg pole vaulter intends to pass over a 6.4-meter high bar. She needs to maintain a minimal speed of 0.72 m/s at the top in order to pass the bar. What is the minimum speed at which she should run in order to attain the height? Neglect air resistance, as well as any energy absorbed by the pole Answer in units of m/s and round to one decimal place. Hints: Mechanical energy is conserved during vaulting. KE at...
QUESTION 3 A 54 kg pole vaulter intends to pass over a 6.9-meter high bar. She needs to maintain a minimal speed of 0.79 m/s at the top in order to pass the bar. What is the minimum speed at which she should run in order to attain the height? Neglect air resistance, as well as any energy absorbed by the pole. Answer in units of m/s and round to one decimal place. Hints: Mechanical energy is conserved during vaulting....
i need the answer for number 3 2. A kid (mass 50kg) is waiting his turn at the top of a water slide (elevation h - 20m), when he receives the 'go' signal. Assuming no friction, and angle for the slide 8 = -20°, please answer: (a) how much is the gravitational potential energy of the kid while still at the top?. (b) what is the final speed of the kid when he reaches the ground level (h=0)?. Take g...
1. /2 points GrifEP7 6.E.12. At the low point in its swing, a pendulum bob with a mass of 0.7 kg has a velocity of 8 m/s (a) What is its kinetic energy at the low point? (b) Ignoring air resistance, how high will the bob swing above the low point before reversing direction?
At a given instant the top end A of the bar has the velocity and acceleration shown in the figure. At the instant shown, determine: The velocity of point B. vB_______ cm/s (A. -5.00 B. 7.00 C. 8.66 D. 5.00 E. None) The angular velocity of the bar, OAB_______ rad/s (A.-1.0 B. 1.0 C.5.0 D.3.2 E. None) The acceleration of point B. aB_______ cm/s2 (A. -7.88 B. 7.88 C.-8.66 D8.66 E. None) The angular acceleration of the bar, αAB=_______ rad/s2 (A. 0.33 B. 3.30...
Explore A baseball is thrown from the top of a tall building with an initial velocity of 10 m/s from a height of h= 11.5 m above the ground. Find its speed when it reaches the ground (a) if its launch angle is 37°, and (b) if it is launched horizontally. Conceptualize As the baseball moves upward and to the right, the force of gravity accelerates it downward. The vertical component of its velocity decreases in magnitude until the baseball...
A 70 Kg skier is standing still on to of 30m high slope. After taking a deep breath, he starts skiing downhill towards the tip of the ramp where he takes off into the sky. As he reaches a 20m high point along his flight trajectory his speed (magnitude of his velocity) is 10 m/s. - How much mechanical energy has been dissipated up to this point? - What has this dissipated mechanical energy transformed into? - Do you have...