3. During their dance, Ivan lifts 70 kg Anna by pulling her upward with a 300...
Renee is on Spring Break and pulling her 21-kg suitcase through the airport at a constant speed of 0.47 m/s. She pulls on the strap with 120 N of force at an angle of 38° above the horizontal. Assume the ground to be flat, Draw a FBD showing the forces on the suitcase. Find the acceleration of the suitcase. Determine the normal force experienced by the suitcase. Determine the total resistive force (friction) experienced by the suitcase. Find the coefficient...
a.) A 70 kg skater is lifted upward by her teammates with an acceleration of 2.8 m/s^2. How much force do her teammates exert on her? b.) The skater and her teammates take a victory lap around the rink. How much force do her teammates need to exert to hold her motionless over their heads?
To develop muscle tone, a woman lifts a 4.50 kg weight held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. a) What is the angular acceleration (in rad/s2) if the weight is 24.0 cm from the elbow joint, her forearm has a moment of inertia of 0.250 kg · m2, and the net force she exerts is 500 N at an effective perpendicular lever arm of 2.20 cm? (Ignore gravity)...
A woman at an airport is towing, her 25.0-kg suitcase at constant speed by pulling on a strap at an angle theta above the horizontal. She pulls on the strap with a 40.0-N force, and the friction force on the suitcase is 20.0 N. Draw a free-body diagram of the suitcase. What angle does the strap make with the horizontal? What normal force does the ground exert on the suitcase?
A woman stands on a scale in a moving elevator. Her mass is 62.0 kg, and the combined mass of the elevator and scale is an additional 838 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9140 N. What does the scale read (in N) during the acceleration?
A woman stands on a scale in a moving elevator. Her mass is 62.0 kg, and the combined mass of the elevator and scale is an additional 772 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9930 N. What does the scale read (in N) during the acceleration?
A woman stands on a scale in a moving elevator. Her mass is 55.0 kg, and the combined mass of the elevator and scale is an additional 797 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9190 N. What does the scale read (in N) during the acceleration? Number Units
A woman stands on a scale in a moving elevator. Her mass is 57.5 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9870 N. What does the scale read during the acceleration?
(Newton’s Laws, tension) A 300-kg horse is pulling a heavy 200-kg sled on a flat snowy ground through a rope connection and traveling with a speed of 5 m/s. The ground provides a force of 1300 N to the horse in parallel to the ground. The friction force on the sled is 150 N and no friction force acting on the horse. Find: (a) the acceleration of horse-sled system (b) the tension in the rope, PLEASE ANSWER ALL AND EXPLAIN...
A 70 kg stunt pilot begins pulling out of a dive into a vertical circle. If the plane’s speed at the lowest point of the circle is 80 m/s, what is the apparent weight of the pilot at the lowest point of the pullout? The pilot experiences a force of 5g from the centripetal acceleration at the bottom of the dive.