After an annual checkup, you leave your physician’s office, where you weighed 683 N. You then get into an elevator that, conveniently, has a scale. Find the magnitude and direction of the elevator’s acceleration if the scale reads (a) 725 N and (b) 595 N.
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After an annual checkup, you leave your physician’s office,
where you weighed 683 N. You then get into an elevator that, conveniently,
has a scale. Find the magnitude and direction of the elevator’s
acceleration if the scale reads (a) 725 N and (b) 595 N.
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- Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.A block of mass m1 = 38.4 kg on a horizontal surface is connected to a mass m2 = 15.2 kg that hangs vertically as shown in the figure below. The two blocks are connected by a string of negligible mass passing over a frictionless pulley. Assume that the horizontal surface is smooth. a) What is the acceleration (in m/s2) of the hanging mass? (Enter the magnitude only.) b) Determine the tension (in N) in the cord. (Enter the magnitude only.)A sled of mass 95 kg is being pushed up a slope with an applied force of 937 N. The slope is inclined with an angle of 43 degrees with respect to the horizontal. The coefficient of friction between the sled and the hill is 0.26. Find the acceleration of the crate (in m/s2).
- You bring a bathroom scale onto an elevator and press "up". Your mass is 65 kg. If the bathroom scale reads 750 N, (a) what is the acceleration of the elevator? You then press down and the acceleration downward is of the same magnitude. (b) While accelerating downward, you hold a small mass of 100 g attached to a string. What is the tension in the string? This elevator is in the new BU Data Science building where g = 10 m/s². Your work should include free body diagramsYou are standing on a bathroom scale inside an elevator. Your weight is 144 lb, but the reading of the scale is 112 lb. a. What is the acceleration of the elevator? If the acceleration is in upward direction, enter a positive value and if it is in downward direction, enter a negative value. answer in m/s^2 b. see attachedA train pulls away from a station with a constant acceleration of 5.00 m/s2, after starting at rest. A ball of mass 3.20 kg hangs from a string attached to the ceiling of the train carriage. (1) Draw a sketch showing all the forces on the ball, indicating the direction of the acceleration vector. (2) Compute the angle that the string makes with the vertical.
- A 40 kg wooden crate is being pulled across a wooden surface by a force (of magnitude F) that is angled 20° above the horizontal. The coefficient of static friction is 0.5 and the coefficient of kinetic friction is 0.3. (a)Calculāte the minimum force F (in N) that must be exerted to get the crate moving. (b)What is the acceleration (in m/s?) of the crate once it starts to move, if that force (F) is maintained?Let's say an astronaut is walking on the moon and wants to test out some basic kinematics. Because there's no atmosphere, there's no air resistance, so the only thing that can cause an object to move faster on the moon is the moon's gravity. Let's say you have a hammer and a feather, each weighing 10.0 kg and 1.00 kg respectively. When you drop them from a height of 1.65 meters, they should both hit the ground at the same time. The gravity on the moon is around 1/6 of what it is on Earth, so you need to figure out how long it'll take for the hammer to reach the ground.When Two forces FA and FB are applied to an object whose mass is 9.15 kg. The larger force is FA. both forces point due east, the object's acceleration has a magnitude of 0.784 m/s². However, when FA points due east and FB points due west, the acceleration is 0.420 m/s², due east. Find (a) the magnitude of FA and (b) the magnitude of FB. (a) Number i (b) Number i Units Units
- A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.7 m/s2. (a) If the tension in the cord is 63 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 1.7 m/s2?A box of mass 15.7 kg slides down an inclined plane without friction. If the acceleration, a, of the box along the direction of the plane is 4.1 m/s2, what is the angle θ (in degrees) of the plane with respect to the horizontal?A flea jumps by exerting a force of 1.02 x 10-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 1.16 × 10-6 N on the flea. Find the direction and magnitude (in m/s²) of the acceleration of the flea if its mass is 6.0 × 107 kg. (Let us assume that F points to the right. We will consider this to be the +x direction and vertical to be the +y wind direction.) magnitude 17.1 Did you draw a free-body diagram, and identify the forces acting on the flea? Consider the forces acting on the flea during the time it is in contact with the ground. m/s² direction 6.49 Review vector components. In which of the four quadrants is the resultant force located?° (measured clockwise from the vertical) Tutorial Supporting Materials Physical Constants Submit Answer