The force F= 600 lb is shown in the figure. What is the X-component of F in Newton? b. 1. a. What is the component of F in the X-axis in Newton? What is the component of F in the Y'-axis in Newton? C. FR X'

QUESTION 6 A cannonball is shot at an angle of 340 above level ground. Another cannonball that is shot a given angle above level ground has the same horizontal range as the first cannonball. What is the angle of elevation of the second cannonball? (Neglect wind resistance.) a. The result depends on the relative masses of the cannonballs. b. 450 C. 340 only d. 340 and 560 e. 560 only

1b

You are standing still on a bathroom scale. The scale shows your weight 140 lbs. How much is the support force?   A. ZERO   B. 140 x 9.8 m/s^2   C. 140N   D. 140 lbs Then choose all that apply to centripetal force.   A. Gravitational and electrical forces can produce centripetal forces.   B. Centripetal force depends on tangential spreed and radius of curvature .   C. twice the radius needs half the centripetal force.   D. Measured in the units of N or kg m/s^2   E. Any type of force directed towards a fixed center.   F. Twice the speed needs four times the centripetal force.   G. Centripetal force depends on the mass, tangential speed and radius of the curvature.

46 WNIFI The cable of the tower crane is subjected to 840 N force, the magnitude of the moment of the force F about A is. Hint: Determine the moment of the force 'F' in Cartesian Vector Form, then deduce the magnitude. F = 840 N 24 m 3 m 15 m 2 m 10 m Select one: a. 12979.98 N.m b. -5040 N.m c. 18840 N.m d. 7920 N.m

A 140-gram apple fell from a tree and hit Sir Isaac's head. What is the force exerted by Sir Isaac's head on the apple? A. 9.81 N, upward B. 1.37 N, downward OC. 9.81 N, downward OD. 1.37 N, upward E. ON

3. You push a grocery cart along a level floor in the presence of friction effects between the cart and the floor. a. Draw force diagrams for you, the cart, and the floor/earth. Fully label all vectors. b. While you are making the cart speed up, how does the size of the force you apply on the cart b. compare to the size of the force the cart exerts on you? Explain. c. While you are making the cart speed up, how does the size of the frictional force on the cart by the floor compare to the frictional force on you by the floor?

It takes the elevator in a skyscraper 4.0 s to reach its cruising speed of 10 m/s. A 60 kg passenger gets aboard on the ground floor. What is the passenger’s apparent weighta. Before the elevator starts moving?b. While the elevator is speeding up?c. After the elevator reaches its cruising speed?

You push a lawnmower (mass=15kg) across the lawn at constant speed. To do so, you must excert 200 N of force. The handle makes a 35° angle with the horizontal.  A. Draw the force diagram B. What is the x-component of the force you apply? C. How does it compare to the frictional force which opposes your effort? Explain. D. If the frictional force is reduced to 100 N, determine the acceleration of the lawnmower.

Number 5