A mountain climber has a mass of 70 kg. Determine his loss of absolute weight in going from the foot of Mount Everest at an altitude of 2440 meters to its top at an altitude of 8848 m. Mount Everest has a latitude of 28° N, and the mean radius of the earth is 6371 km. Consult Fig. 1/1 as needed.

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1 N

Figure 1/1.

A broadjumper approaches his takeoff board A with a horizontal velocity of 34 ft/sec. Determine the vertical component v_y of the velocity of his center of gravity at takeoff for him to make the jump shown. (L = 22 ft) What is the vertical rise h of his center of gravity?

vy =	Enter a number. 1 ft/s
h =	Enter a number. 2 ft

Problem 2/67.

The coefficient of static friction between the flat bed of the truck and the crate it carries is 0.40. Determine the minimum stopping distance s which the truck can have from a speed of 100 km/h with constant deceleration if the crate is not to slip forward.

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1 m

Problem 3/14.

The experimental race car is propelled by a rocket motor and is designed to reach a maximum speed v = 300 mi/hr under the thrust T of its motor. Prior wind-tunnel tests disclose that the wind resistance at this speed is 230 lb. If the rocket motor is burning fuel at the rate of 3.5 lb/sec, determine the velocity u of the exhaust gases relative to the car.
u =

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1 ft/s

Problem 4/32.

The two gears form an integral unit and roll on the fixed rack. The large gear has 48 teeth, and the worm turns with a speed of 160 rev/min. Find the velocity v_O of the center O of the gear.

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1 mm/s

Problem 5/49.