In the figure below, the net external force on the 28 kg mower is stated to be 52 N. Fret If the force of friction opposing the motion is 30 N, what force F (in N) is the person exerting on the mower? (Enter the magnitude.) 82 N Suppose the mower is moving at 1.5 m/s when the force F is removed. How far (in m) will the mower go before stopping? 1.1 X m
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- A 9 kg object undergoes an acceleration given by a (4î - 3j) m/s? The magnitude of the resultant force acting on the object equals: %3D a. 2025 N Ob.9 N OC. 45 N Od. 225 NA girl is using a rope to pull a box that weighs 300 lb across a level surface with constant velocity.The rope makes an angle of 30 ̊ above the horizontal and the tension in the rope is 100 lb. What is thenormal force of the floor on the box?a. 50 lbb. 86 lbc. 140 lbd. 250 lbe. 300 lb13. 54-kg box is sitting on the floor of a level railroad car which is moving forward with a speed of 25 m/s and accelerating at a rate of 5.6 m/s2. What is the strength, in Newtons, of the frictional force acting on the box if it does not slide on the floor? O A. 0 O B. 25 N O C. 54 N O D. 248 N O E. 255 N O F. 302 N O G. 520N O H. 1350 N Back Save & Continue 2020 BYU 99+
- 2. A 1,480-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0° below the horizontal, as shown in the figure a below. The floor has some amount of friction. 20.0° a a. Draw a free body diagram of all the forces on the crate. b. Write out one equation for the y component of the resultant force. Hint: The crate does not move in the y direction. Write out one equation for the x component of the resultant force. Hint: the crate moves in the x direction. C. d. Determine the Normal force. e. What is the coefficient of kinetic friction between the crate and the floor? (Enter vour answer to at least three decimal places.)You are standing still on a bathroom scale. The scale shows your weight 140 lbs. How much is the support force? A. 140 x 9.8 m/s^2 B. ZERO C. 140N D. 140 lbsIn the figure, the net external force on the 24 kg mower is known to be 51 N. f=28N v=1.8 m/s a. If the force of friction opposing the motion of 28N what force in newtons is the person acting on the mower? b. Suppose the mower is moving at 1.8 m/s when the force F is removed. How far will the mower go before stopping in m?
- A block is at rest on inclined plane and is on the verge of slipping. Which of the following relationships between W and N is correct. (Vectors not drawn to scale) F; wooden block W a. Wsin(theta)=(mu)N b. W=(mu)N O c. Wcos(theta)=(mu)N d. Wsin(theta)=NPLease don't provide handwritten solution... A mass of 25 kg wooden crate is placed on a metal incline that makes an angle of 37 ̊ relative to the horizontal. The coefficients of friction for metal on wood are = 0.5 and = 0.3. a. Make a sketch of the situation. b. Make a force diagram for the mass. c. What is the maximum amount of static friction between the crate and the incline? c. Does the crate break free and slide down the ramp?The leg and cast in the figure below weigh 266 N (w,). Determine the weight w, and the angle a needed so that no force is exerted on the hip joint by the leg plus cast. = 142 W2 Your response differs from the correct answer by more than 10%. Double check your calculations. N = 53.7 Your response differs from the correct answer by more than 10%. Double check your calculations. w2 110 N 40 Wi
- 1. a 10.00 kg object is sliding across a surface. The kinetic frictional force is 1.96 N. It took an applied force of 16.96 N to cause the box to accelerate at 1.50 m/s2. a.) what is the KINETIC COEFFICIENT of friction between the two surfaces? b.) determine what the two surfaces are made of (using Table below) KINETIC FRICTION: 0.20 steel on steel , 0.13 steel on steel lubricated .40 glass on glass, 0.25 hardwood on hardwood .30 steel on concrete, 1.0 rubber on dry concrete 0.97 rubber on wet concrete, 0.02 aluminum on wet snow 0.04 steel on teflon use Newton's full second law of equation: Fa + Ff = m a1. Four horses are pulling a wagon down a street in a parade. the front two horses can each pull 1500N (forward) on their reigns, while the back two horses can each pull 1200 N (forward). the force of friction of the wagon wheels on the ground is 550 N (backward). Starting with a free body diagram, calculate the net force on the wagon. 2. What is the displacement and direction of the resultant vector if a soccer player runs 55.0m at an angle of N27 degrees West, and then runs 23.0m at an angle of S5 degrees West from her new location? Draw a diagram, please! 3. A golf ball, which is lying directly on the ground, is hit with a velocity of 22m/s at an angle of 30 degrees above the horizontal. Determine the golf balls: a). time of flight b). range c). maximum heightA skier with a mass of 50 kg went down a smooth snowy slope that makes an angle of 25 degrees with the horizontal line. 1. What's the net force acting on the skier? 2. What's the skier's rate of acceleration going down the snowy slope?