A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.73 of the person's regular weight. Calculate the acceleration of the elevator.
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- The graph shows the force-time graph for a cart on a track (albeit a somewhat unrealistic one since the force goes from one value to another in zero time). a. calculate the area under the force-time graph. What physical quantity does your result give? Don't forget to give units. b. Draw a different force-time graph on the same axes that gives the same result.A 70-kg man stands on a bathroom scale inside an elevator. The scale measures in units of newtons. a. The elevator accelerates upward from rest at a rate of 1.20 m/s2 for 1.50 s. What does the scale read during this 1.50 s interval? b. The elevator continues upward at constant velocity for 8.50 s. What does the scale read now? c. While still moving upward, the elevator's speed decreases at a rate of 0.600 m/s2 for 3.00 s. What is the scale reading during this time?A man pulling an empty wagon causes it to accelerate at 1.4 m/s². Part A What will the acceleration be if he pulls with the same force when the wagon contains a child three times that of the wagon? Express your answer in meters per second squared. a = ΓΠ ΑΣΦ = ? m/s²
- A 79-kg person stands on a bathroom scale and rides in an elevator whose Vy-versus-time graph is shown in (Figure 1). Part A What is the reading on the scale at t = 1.0 s? Express your answer to two significant figures and include appropriate units. Value Units Submit Request Answer Part B What is the reading on the scale at t = 4.0 s? Express your answer to two significant figures and include appropriate units. Value Units Figure Submit Request Answer 5 Part C 4 What is the reading on the scale at t = 8.0 s? Express your answer to two significant figures and include appropriate units. 1 Value Units 5 8 9 10 (s/w) daHenry, whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the first 2.0 s after the elevator starts moving, then 930 N for the next 2.0 s. Part A What is the elevator's speed 4.0 s after starting? Express your answer with the appropriate units. HẢ Value Units V = Submit Request AnswerAn astronaut weighing 236 lbs on Earth is on a mission to the Moon and Mars. a.What would he weigh in newtons when he is on the Moon? The acceleration due to gravity on the Moon is one-sixth that on Earth? b. How much would he weigh in newtons when he is on Mars, where the acceleration due to gravity is 0.38 times that on Earth? c. What is his mass in kilograms on Earth?
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- You have just landed on Planet X. You release a 180 g ball from rest from a hoight of 12.0 m and measure that it takes 3.00 s to reach the ground. Ignore any force on the ball trom the atmosphere of the planet. Part A How much does the 180 g ball weigh on the surface of Planet X? Express your answer with the appropriate units. w- Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining Provido. FeadbackA 0.623 kg. basketball is dropped from the rooftop of a building. If it took the ball 3.5 seconds to reach the ground, the speed of the ball before it touches the ground is 34.3 m/s the height of the building is 60.025 m c. What is the ball's acceleration half-way down the building?d. What is the ball's velocity half-way down the building?It takes the elevator in a skyscraper 3.8 s to reach its cruising speed of 13 m/s . A 67 kg passenger gets aboard on the ground floor. Part A What is the passenger's weight before the elevator starts moving? Express your answer to two significant figures and include the appropriate units. HẢ w = Value Units Submit Request Answer Part B What is the passenger's weight while the elevator is speeding up? Express your answer to two significant figures and include the appropriate units. HÀ ? w = Value Units Submit Request Answer Part C What is the passenger's weight after the elevator reaches its cruising speed? Express your answer to two significant figures and include the appropriate units. HA w = Value Units Submit Request Answer Provide Feedback