本课配套习题挑战模式1/5
A: 测力计的量程不允许超过被测力的大小 |
B: 被测力应作用在挂钩上 |
C: 弹簧测力计不仅能测竖直方向的力,也能测其他方向上的力 |
D: 测量时指针不要与外壳接触 |
- 提示1:IOmAie+8mumAieaLqeWSjOaYr+eahOmHj+eoi+WSjOWIhuW6puWAvA==
- 提示2:IOaUvu+8muaLieWKm+WSjOW8ueewp+a1i+WKm+iuoeWcqOWQjOS4gOebtOe6v+S4ig==
- 提示3:IOivu++8muinhue6v+WeguebtOW8ueewp+a1i+WKm+iuoeivu+aVsOOAgg==
- 答案:QQ==
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
本课配套习题挑战模式2/5
下列关于弹簧测力计的使用方法中,不正确的是( )
A: 弹簧测力计测力时,必须竖直放置,不得倾斜拉 |
B: 使用时,弹簧、指针、钩码不能与外壳摩擦 |
C: 读数时,视线要过指针与刻度面垂直 |
D: 测力时,弹簧测力计的轴线应跟力的方向一致 |
- 提示1:PHA+6YCJ77ya6YCJ5oup5ZKM5piv55qE6YeP56iL5ZKM5YiG5bqm5YC8PC9wPg==
- 提示2:PHA+5pS+77ya5ouJ5Yqb5ZKM5by557Cn5rWL5Yqb6K6h5Zyo5ZCM5LiA55u057q/5LiKPC9wPg==
- 提示3:PHA+6K+777ya6KeG57q/5Z6C55u05by557Cn5rWL5Yqb6K6h6K+75pWw44CCPC9wPg==
- 答案:QQ==
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
本课配套习题挑战模式3/5
如图所示,弹簧测力计下挂着一个重物处于静止,则弹簧测力计的示数和弹簧测力计所受到的合力分别为( )
A: 2.4N 2.4N |
B: 2.4N 4.8N |
C: 5N 2.4N |
D: 2.4N 0N |
- 提示1:PHA+5by557Cn5rWL5Yqb6K6h5Zyo5L2/55So5YmN6KaB6KeC5a+f5YW26YeP56iL5ZKM5YiG5bqm5YC877yM5YaN5qC55o2u5oyH6ZKI5omA5oyH56S655qE5Yi75bqm5p2l6K+75pWw77ybPC9wPg==
- 提示2:PHA+5by557Cn5rWL5Yqb6K6h5aSE5LqO6Z2Z5q2i54q25oCB77yM5Y+X5Yiw55qE5Yqb5Li65bmz6KGh5Yqb77yM5o2u5q2k5rGC5ZCI5Yqb5aSn5bCPLjwvcD4=
- 答案:RA==
PHA+77yIMe+8ieW8ueewp+a1i+WKm+iuoeeahOacgOWkp+WIu+W6puaYrzVO77yM5YiZ6YeP56iL5Li6MO+9njVO77yM5YiG5bqm5YC85Li6MC4yTu+8jOivpeeJqeS9k+eahOmHjeS4ujIuNE7vvJs8YnI+77yIMu+8ieW8ueewp+a1i+WKm+iuoeWPl+WIsOWQkeS4iuOAgeWQkeS4i+eahOaLieWKm++8jOWkhOS6jumdmeatoueKtuaAge+8jOWPl+W5s+ihoeWKm++8jOWPl+WIsOeahOWQiOWKm+S4ujAuPGJyPuaVhemAiUQuPC9wPg==
本课配套习题挑战模式4/5
在弹性限度内,用手拉长弹簧测力计越来越费力,是因为( )
A: 力是物体对物体的作用,物体间力的作用是相互的 |
B: 因为人是受力的物体,所以感到费力 |
C: 弹簧越来越紧,阻力大,拉起来费力 |
D: 弹簧的伸长越长,所需拉力越大 |
- 提示1:PHA+6KKr5ouJ5Ly455qE6LaK6ZW/77yM5by55oCn5b2i5Y+Y5bCx6LaK5aSnPC9wPg==
- 答案:RA==
PHA+5by557Cn6KKr5ouJ6ZW/5pe277yM5Lya5Y+R55Sf5by55oCn5b2i5Y+Y77yM6ICM5Y+R55Sf5by55oCn5b2i5Y+Y55qE54mp5L2T6KaB5oGi5aSN5Y6f54q25bCx5Lya5a+55o6l6Kem5a6D55qE54mp5L2T5Lqn55Sf5Yqb55qE5L2c55So77yM5Y2z5by55Yqb77ybPGJyPuS4lOW8ueewp+iiq+aLieeahOi2iumVv++8jOW8ueWKm+Wwsei2iuWkp++8jOaLiei1t+adpeWwsei2iui0ueWKm++8mzxicj7mlYXpgIlELjwvcD4=
本课配套习题挑战模式5/5
A: 仍等于3N |
B: 大于3N |
C: 小于3N |
D: 等于零 |
- 提示1:IOW8ueewp+a1i+WKm+iuoeeahOivu+aVsOetieS6juaMgumSqeS4iuWPl+WIsOeahOaLieWKm+Wkp+Wwjw==
- 提示2:IOWAkuaMgueahOaXtuWAme+8jOaMgumSqeaLieWKm+etieS6jueJqeS9k+mHjeWKm+WKoOS4iuW8ueewp+a1i+WKm+iuoemHjeWKm+S5i+WSjA==
- 答案:Qg==
5by557Cn5YCS572u6L+H5p2l5pys6Lqr5bCx5pyJ56S65pWw77yM5YaN5Yqg5LiK54mp5L2T55qE6YeN5YqbM07vvIzmiYDku6XlvLnnsKfmtYvlipvorqHnmoTnpLrmlbDlpKfkuo4zTi4gPGJyPuaVhemAiUIuIA==